.center {
  width: 1400px;
  margin: 0 auto;
}

/* mailbox START */
.mailbox_banner {
  height: 544px;
  background-image: url(../images/public/email01.png);
}

.mailbox_banner .mailbox_banner_container {
  height: 100%;
}

.mailbox_banner .center {
  width: auto;
  text-align: center;
}

.mailbox_banner .center .explain .explain_title {
  font-size: 48px;
  color: #384049;
}

.mailbox_banner .center .explain .explain_content {
  height: 34px;
  color: #fff;
  overflow: hidden;
  line-height: 34px;
  background: #ff9c00;
  border-radius: 17px;
  white-space: nowrap;
  padding-left: 15px;
  padding-right: 40px;
  margin-top: 25px;
  font-size: 16px;
  background: -webkit-linear-gradient(left, rgba(255, 156, 0, 0.7) 15%, #ff9c00);
  background: -moz-linear-gradient(left, rgba(255, 156, 0, 0.7) 15%, #ff9c00);
  background: -ms-linear-gradient(top left, rgba(255, 156, 0, 0.7) 15%, #ff9c00);
  background: linear-gradient(left, rgba(255, 156, 0, 0.7) 15%, #ff9c00);
}

.mailbox_banner .center .explain .explain_content .iconfont {
  float: left;
  font-size: 18px;
  margin-right: 5px;
  position: relative;
  top: 1px;
}

.mailbox_banner .center .explain .explain_link {
  color: #ff9c00;
  padding: 8px 0;
  font-size: 20px;
  text-indent: 4px;
  letter-spacing: 4px;
  border: 1px solid #ff9c00;
  position: relative;
  border-radius: 2px;
  line-height: 30px;
  margin-top: 50px;
  overflow: hidden;
  width: 164px;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  -o-transition: all 0.3s;
  transition: all 0.3s;
}

.mailbox_banner .center .explain .explain_link span {
  position: relative;
  z-index: 10;
}

.mailbox_banner .center .explain .explain_link::after {
  content: '';
  display: block;
  position: absolute;
  margin: auto;
  height: 100%;
  width: 100%;
  left: 0;
  right: 0;
  top: 100%;
  background: #ff9c00;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -o-transition: all 0.5s;
  transition: all 0.5s;
}

.mailbox_banner .center .explain .explain_link:hover {
  color: #fff;
}

.mailbox_banner .center .explain .explain_link:hover::after {
  top: 0;
}

.mailbox .main {
  padding: 60px 0;
  overflow: hidden;
  position: relative;
}

.mailbox .main:nth-child(odd) {
  background-color: #fff;
}

.mailbox .main:nth-child(even) {
  background-color: #f9f9f9;
}

.mailbox .main .main_title {
  color: #333;
  text-align: center;
}

.mailbox .main .main_title .main_title_text {
  font-size: 22px;
}

.mailbox .main .main_title .main_title_desc {
  font-size: 14px;
  margin-top: 18px;
}

.mailbox .main1 .item {
  border: 1px solid #E2E2E2;
  background: #FFF;
  border-radius: 4px;
  overflow: hidden;
  padding: 30px;
  width: 370px;
}

.mailbox .main1 .item.item_left {
  margin-top: 10px;
}

.mailbox .main1 .item.item_left .explain_list .explain_list_item.active::after {
  background-image: url(../images/public/email04.png);
}

.mailbox .main1 .item.item_right {
  border-color: #ff9c00;
  border-top-width: 7px;
  box-shadow: 0 14px 14px 0 rgba(0, 0, 0, 0.05);
  margin-left: 40px;
}

.mailbox .main1 .item.item_right .explain_list .explain_list_item.active::after {
  background-image: url(../images/public/email05.png);
}

.mailbox .main1 .item .explain .explain_title {
  color: #333;
  font-size: 26px;
  margin-bottom: 6px;
  letter-spacing: 3px;
}

.mailbox .main1 .item .explain .explain_desc {
  color: #333;
  font-size: 14px;
  margin-bottom: 23px;
}

.mailbox .main1 .item .explain .explain_content {
  font-size: 18px;
  color: #4F4F4F;
  line-height: 48px;
  margin-bottom: 26px;
}

.mailbox .main1 .item .explain .explain_content span {
  color: #333;
  font-size: 34px;
}

.mailbox .main1 .item .explain .explain_content span+p {
  color: #333;
  font-size: 14px;
  margin-left: 5px;
  line-height: 36px;
}

.mailbox .main1 .item .explain .explain_link {
  width: 200px;
  padding: 8px 0;
  font-size: 16px;
  text-indent: 2px;
  border-radius: 2px;
  background: #FFF;
  letter-spacing: 2px;
  border: 1px solid #ff9c00;
  margin-bottom: 30px;
  text-align: center;
  color: #ff9c00;
  -webkit-transition: all 0.15s;
  -moz-transition: all 0.15s;
  -o-transition: all 0.15s;
  transition: all 0.15s;
}

.mailbox .main1 .item .explain .explain_link.active {
  color: #fff;
  background: #ff9c00;
}

.mailbox .main1 .item .explain .explain_link:hover {
  opacity: 0.8;
}

.mailbox .main1 .item .line {
  height: 1px;
  background: #eee;
  margin-bottom: 30px;
}

.mailbox .main1 .item .explain_list .explain_list_item {
  font-size: 14px;
  color: #D3D3D3;
  overflow: hidden;
  line-height: 18px;
  padding-left: 20px;
  position: relative;
  -o-animation-delay: 0.5s;
  -moz-animation-delay: 0.5s;
  -webkit-animation-delay: 0.5s;
  animation-delay: 0.5s;
}

.mailbox .main1 .item .explain_list .explain_list_item:nth-child(1) {
  -o-animation-delay: 0s;
  -moz-animation-delay: 0s;
  -webkit-animation-delay: 0s;
  animation-delay: 0s;
}

.mailbox .main1 .item .explain_list .explain_list_item:nth-child(2) {
  -o-animation-delay: 0.1s;
  -moz-animation-delay: 0.1s;
  -webkit-animation-delay: 0.1s;
  animation-delay: 0.1s;
}

.mailbox .main1 .item .explain_list .explain_list_item:nth-child(3) {
  -o-animation-delay: 0.2s;
  -moz-animation-delay: 0.2s;
  -webkit-animation-delay: 0.2s;
  animation-delay: 0.2s;
}

.mailbox .main1 .item .explain_list .explain_list_item:nth-child(4) {
  -o-animation-delay: 0.3s;
  -moz-animation-delay: 0.3s;
  -webkit-animation-delay: 0.3s;
  animation-delay: 0.3s;
}

.mailbox .main1 .item .explain_list .explain_list_item:nth-child(5) {
  -o-animation-delay: 0.4s;
  -moz-animation-delay: 0.4s;
  -webkit-animation-delay: 0.4s;
  animation-delay: 0.4s;
}

.mailbox .main1 .item .explain_list .explain_list_item:nth-child(6) {
  -o-animation-delay: 0.5s;
  -moz-animation-delay: 0.5s;
  -webkit-animation-delay: 0.5s;
  animation-delay: 0.5s;
}

.mailbox .main1 .item .explain_list .explain_list_item:nth-child(7) {
  -o-animation-delay: 0.6s;
  -moz-animation-delay: 0.6s;
  -webkit-animation-delay: 0.6s;
  animation-delay: 0.6s;
}

.mailbox .main1 .item .explain_list .explain_list_item:nth-child(8) {
  -o-animation-delay: 0.7s;
  -moz-animation-delay: 0.7s;
  -webkit-animation-delay: 0.7s;
  animation-delay: 0.7s;
}

.mailbox .main1 .item .explain_list .explain_list_item:nth-child(9) {
  -o-animation-delay: 0.8s;
  -moz-animation-delay: 0.8s;
  -webkit-animation-delay: 0.8s;
  animation-delay: 0.8s;
}

.mailbox .main1 .item .explain_list .explain_list_item:nth-child(10) {
  -o-animation-delay: 0.9s;
  -moz-animation-delay: 0.9s;
  -webkit-animation-delay: 0.9s;
  animation-delay: 0.9s;
}

.mailbox .main1 .item .explain_list .explain_list_item:nth-child(11) {
  -o-animation-delay: 1s;
  -moz-animation-delay: 1s;
  -webkit-animation-delay: 1s;
  animation-delay: 1s;
}

.mailbox .main1 .item .explain_list .explain_list_item:nth-child(12) {
  -o-animation-delay: 1.1s;
  -moz-animation-delay: 1.1s;
  -webkit-animation-delay: 1.1s;
  animation-delay: 1.1s;
}

.mailbox .main1 .item .explain_list .explain_list_item:nth-child(13) {
  -o-animation-delay: 1.2s;
  -moz-animation-delay: 1.2s;
  -webkit-animation-delay: 1.2s;
  animation-delay: 1.2s;
}

.mailbox .main1 .item .explain_list .explain_list_item:nth-child(14) {
  -o-animation-delay: 1.3s;
  -moz-animation-delay: 1.3s;
  -webkit-animation-delay: 1.3s;
  animation-delay: 1.3s;
}

.mailbox .main1 .item .explain_list .explain_list_item:nth-child(15) {
  -o-animation-delay: 1.4s;
  -moz-animation-delay: 1.4s;
  -webkit-animation-delay: 1.4s;
  animation-delay: 1.4s;
}

.mailbox .main1 .item .explain_list .explain_list_item:not(:last-child) {
  margin-bottom: 16px;
}

.mailbox .main1 .item .explain_list .explain_list_item.active {
  color: #4F4F4F;
}

.mailbox .main1 .item .explain_list .explain_list_item.active::after {
  content: "";
  width: 10px;
  height: 7px;
  overflow: hidden;
  margin-right: 10px;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
  position: absolute;
  left: 0;
  top: 6px;
}

.mailbox .main2 .main_container {
  margin-top: 20px;
}

.mailbox .main2 .main_container .item {
  width: 260px;
  text-align: center;
}

.mailbox .main2 .main_container .item:not(:nth-child(4n)) {
  margin-right: 65px;
}

.mailbox .main2 .main_container .item:hover .item_picture {
  -o-transform: translate(0, -12px);
  -moz-transform: translate(0, -12px);
  -webkit-transform: translate(0, -12px);
  transform: translate(0, -12px);
}

.mailbox .main2 .main_container .item:hover .explain .explain_title {
  -o-transform: translate(0, -8px);
  -moz-transform: translate(0, -8px);
  -webkit-transform: translate(0, -8px);
  transform: translate(0, -8px);
}

.mailbox .main2 .main_container .item:hover .explain .explain_content {
  -o-transform: translate(0, -4px);
  -moz-transform: translate(0, -4px);
  -webkit-transform: translate(0, -4px);
  transform: translate(0, -4px);
}

.mailbox .main2 .main_container .item .item_picture {
  width: 180px;
  margin: 0 auto;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -o-transition: all 0.5s;
  transition: all 0.5s;
}

.mailbox .main2 .main_container .item .item_picture .picture_container {
  height: 140px;
}

.mailbox .main2 .main_container .item .explain .explain_title {
  color: #333;
  font-size: 20px;
  padding: 9px 0 17px;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -o-transition: all 0.5s;
  transition: all 0.5s;
}

.mailbox .main2 .main_container .item .explain .explain_content {
  font-size: 14px;
  color: #4A4A4A;
  line-height: 24px;
  margin-bottom: 10px;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -o-transition: all 0.5s;
  transition: all 0.5s;
}

.mailbox .main_list .main_container {
  margin-top: 50px;
  padding: 0 80px;
}

.mailbox .main_list .item {
  width: 235px;
  height: 190px;
}

.mailbox .main_list .item:not(:nth-child(4n)) {
  margin-right: 100px;
}

.mailbox .main_list .item .item_icon {
  width: 30px;
  height: 30px;
  overflow: hidden;
  border-radius: 50%;
  background-repeat: no-repeat;
  background-image: url(../images/public/email06.png);
}

.mailbox .main_list .item .explain .explain_title {
  color: #333;
  font-size: 16px;
  padding: 12px 0 10px;
}

.mailbox .main_list .item .explain .explain_content {
  font-size: 14px;
  color: #4A4A4A;
  line-height: 24px;
}

.mailbox .main_list .list_container_hide {
  display: none;
}

.mailbox .main_list .list_control .list_control_container {
  cursor: pointer;
}

.mailbox .main_list .list_control .list_control_container:hover .text {
  color: #ff9c00;
}

.mailbox .main_list .list_control .list_control_container:hover .icon {
  color: #ff9c00;
  border-color: #ff9c00;
}

.mailbox .main_list .list_control .text {
  color: #555;
  font-size: 14px;
  line-height: 20px;
  -webkit-transition: all 0.2s;
  -moz-transition: all 0.2s;
  -o-transition: all 0.2s;
  transition: all 0.2s;
}

.mailbox .main_list .list_control .icon {
  color: #666;
  font-size: 12px;
  text-align: center;
  border-radius: 50%;
  width: 16px;
  height: 16px;
  margin-left: 5px;
  line-height: 12px;
  border: 1px solid #555;
  -webkit-transition: all 0.2s;
  -moz-transition: all 0.2s;
  -o-transition: all 0.2s;
  transition: all 0.2s;
}

.mailbox .main3 .list .item:nth-child(1) .item_icon {
  background-position: -40px -593px;
}

.mailbox .main3 .list .item:nth-child(2) .item_icon {
  background-position: -630px -240px;
}

.mailbox .main3 .list .item:nth-child(3) .item_icon {
  background-position: -630px -160px;
}

.mailbox .main3 .list .item:nth-child(4) .item_icon {
  background-position: -600px -593px;
}

.mailbox .main3 .list_container .item:nth-child(1) .item_icon {
  background-position: -630px -440px;
}

.mailbox .main3 .list_container .item:nth-child(2) .item_icon {
  background-position: -280px -593px;
}

.mailbox .main3 .list_container .item:nth-child(3) .item_icon {
  background-position: -630px -520px;
}

.mailbox .main3 .list_container .item:nth-child(4) .item_icon {
  background-position: -630px -320px;
}

.mailbox .main3 .list_container .item:nth-child(5) .item_icon {
  background-position: -560px -553px;
}

.mailbox .main3 .list_container .item:nth-child(6) .item_icon {
  background-position: -240px -553px;
}

.mailbox .main3 .list_container .item:nth-child(7) .item_icon {
  background-position: -360px -593px;
}

.mailbox .main3 .list_container .item:nth-child(8) .item_icon {
  background-position: -440px -593px;
}

.mailbox .main3 .list_container .item:nth-child(9) .item_icon {
  background-position: -120px -593px;
}

.mailbox .main3 .list_container .item:nth-child(10) .item_icon {
  background-position: -200px -593px;
}

.mailbox .main3 .list_container .item:nth-child(11) .item_icon {
  background-position: -520px -593px;
}

.mailbox .main4 .list .item:nth-child(1) .item_icon {
  background-position: -400px -513px;
}

.mailbox .main4 .list .item:nth-child(2) .item_icon {
  background-position: -80px -513px;
}

.mailbox .main4 .list .item:nth-child(3) .item_icon {
  background-position: -630px 0;
}

.mailbox .main4 .list .item:nth-child(4) .item_icon {
  background-position: -560px -513px;
}

.mailbox .main4 .list_container .item:nth-child(1) .item_icon {
  background-position: -120px -553px;
}

.mailbox .main4 .list_container .item:nth-child(2) .item_icon {
  background-position: -520px -553px;
}

.mailbox .main4 .list_container .item:nth-child(3) .item_icon {
  background-position: -40px -553px;
}

.mailbox .main4 .list_container .item:nth-child(4) .item_icon {
  background-position: -480px -513px;
}

.mailbox .main4 .list_container .item:nth-child(5) .item_icon {
  background-position: -360px -553px;
}

.mailbox .main4 .list_container .item:nth-child(6) .item_icon {
  background-position: -160px -513px;
}

.mailbox .main4 .list_container .item:nth-child(7) .item_icon {
  background-position: -240px -513px;
}

.mailbox .main4 .list_container .item:nth-child(8) .item_icon {
  background-position: -200px -553px;
}

.mailbox .main4 .list_container .item:nth-child(9) .item_icon {
  background-position: -440px -553px;
}

.mailbox .main4 .list_container .item:nth-child(10) .item_icon {
  background-position: -280px -553px;
}

.mailbox .main4 .list_container .item:nth-child(11) .item_icon {
  background-position: -320px -513px;
}

.mailbox .main4 .list_container .item:nth-child(12) .item_icon {
  background-position: -630px -80px;
}

.mailbox .main5 .main_container {
  margin-top: 14px;
  padding: 0 120px;
}

.mailbox .main5 .item {
  width: 236px;
  margin-top: 36px;
  border-radius: 4px;
}

.mailbox .main5 .item .item_container {
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -o-transition: all 0.5s;
  transition: all 0.5s;
}

.mailbox .main5 .item .item_container:hover {
  box-shadow: 0 10px 12px rgba(0, 0, 0, 0.1);
  -o-transform: translateZ(0) scale(1.06);
  -moz-transform: translateZ(0) scale(1.06);
  -webkit-transform: translateZ(0) scale(1.06);
  transform: translateZ(0) scale(1.06);
}

.mailbox .main5 .item .item_container:hover .explain {
  color: #fff;
  background: #ff9c00;
}

.mailbox .main5 .item:not(:nth-child(4n)) {
  margin-right: 72px;
}

.mailbox .main5 .item .explain {
  border-radius: 4px 4px 0 0;
  background: #f4f4f4;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -o-transition: all 0.5s;
  transition: all 0.5s;
  padding: 12px 15px;
  font-size: 18px;
  color: #333;
}

.mailbox .main5 .item .explain .explain_title {
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}

.mailbox .main5 .item .picture_container {
  height: 200px;
  border-radius: 0 0 4px 4px;
}

.mailbox .main6 .main_title .explain_link {
  width: 200px;
  padding: 8px 0;
  font-size: 16px;
  text-indent: 2px;
  letter-spacing: 2px;
  border: 1px solid #ff9c00;
  background: #ff9c00;
  border-radius: 2px;
  color: #FFF;
  margin: 30px auto 50px;
  -webkit-transition: all 0.15s;
  -moz-transition: all 0.15s;
  -o-transition: all 0.15s;
  transition: all 0.15s;
}

.mailbox .main6 .main_title .explain_link:hover {
  opacity: 0.8;
}

.mailbox .main6 .main_container {
  padding: 0 100px;
}

.mailbox .main6 .main_container .line {
  height: 1px;
  background: #eee;
  margin-bottom: 50px;
}

.mailbox .main6 .main_container .list {
  padding: 0 80px;
}

.mailbox .main6 .main_container .list .item {
  width: 500px;
}

.mailbox .main6 .main_container .list .item .item_title {
  color: #333;
  font-size: 16px;
  margin-bottom: 10px;
}

.mailbox .main6 .main_container .list .item .explain .explain_title {
  font-size: 14px;
  color: #4A4A4A;
  line-height: 28px;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  -webkit-transition: all 0.2s;
  -moz-transition: all 0.2s;
  -o-transition: all 0.2s;
  transition: all 0.2s;
}

.mailbox .main6 .main_container .list .item .explain .explain_title:hover {
  color: #ff9c00;
}

.mailbox .main6 .main_container .list .item .explain_link {
  font-size: 14px;
  color: #4A4A4A;
  margin-top: 14px;
  line-height: 18px;
  display: inline-block;
  -webkit-transition: all 0.2s;
  -moz-transition: all 0.2s;
  -o-transition: all 0.2s;
  transition: all 0.2s;
}

.mailbox .main6 .main_container .list .item .explain_link .iconfont {
  font-size: 12px;
  margin-left: 3px;
}

.mailbox .main6 .main_container .list .item .explain_link:hover {
  color: #ff9c00;
}

/* mailbox END */





/* 响应 */
@media screen and (max-width: 1600px) {
  .mailbox_banner .center,
  .mailbox .center {
    width: 1400px;
    padding: 0;
  }
}
@media screen and (max-width: 1400px) {
  .mailbox_banner .center,
  .mailbox .center {
    width: 100%;
    padding: 0 15px;
  }

  /* mailbox START */
  .mailbox .main2 .main_container .item {
    width: 18.7%;
  }

  .mailbox .main2 .main_container .item:not(:nth-child(4n)) {
    margin-right: 8.4%;
  }

  .mailbox .main_list .main_container {
    padding: 0;
  }

  .mailbox .main_list .list .item {
    margin-top: 0;
  }

  .mailbox .main_list .item {
    width: 18.7%;
    height: auto;
    margin-top: 40px;
  }

  .mailbox .main_list .item:not(:nth-child(4n)) {
    margin-right: 8.4%;
  }

  .mailbox .main_list .list_control {
    margin-top: 40px;
  }

  .mailbox .main5 .main_container {
    padding: 0;
  }

  .mailbox .main5 .item {
    width: 16%;
    margin-top: 30px;
  }

  .mailbox .main5 .item:not(:nth-child(4n)) {
    margin-right: 0;
  }

  .mailbox .main5 .item:not(:nth-child(5n)) {
    margin-right: 5%;
  }

  .mailbox .main5 .item .picture_container {
    height: auto;
    padding-top: 84.74%;
  }

  .mailbox .main6 .main_container {
    padding: 0;
  }

  .mailbox .main6 .main_container .list {
    padding: 0;
  }

  .mailbox .main6 .main_container .list .item {
    width: 45%;
  }

  /* mailbox END */
}

@media screen and (max-width: 1199px) {

  /* mailbox START */
  .mailbox_banner {
    height: 480px;
  }

  .mailbox_banner .center .explain .explain_title {
    font-size: 36px;
  }

  .mailbox_banner .center .explain .explain_content {
    margin-top: 20px;
  }

  .mailbox_banner .center .explain .explain_link {
    margin-top: 40px;
  }

  .mailbox .main2 .main_container .item {
    width: 21.4%;
  }

  .mailbox .main2 .main_container .item:not(:nth-child(4n)) {
    margin-right: 4.8%;
  }

  .mailbox .main2 .main_container .item .item_picture {
    max-width: 100%;
  }

  .mailbox .main2 .main_container .item .item_picture .picture_container {
    height: auto;
    padding-top: 77.77%;
  }

  .mailbox .main2 .main_container .item .explain .explain_title {
    font-size: 18px;
    padding: 8px 0 15px;
  }

  .mailbox .main5 .item {
    width: 21.4%;
    margin-top: 30px;
  }

  .mailbox .main5 .item:not(:nth-child(5n)) {
    margin-right: 0;
  }

  .mailbox .main5 .item:not(:nth-child(4n)) {
    margin-right: 4.8%;
  }

  .mailbox .main5 .item .explain {
    padding: 12px;
    font-size: 16px;
  }

  .mailbox .main5 .item .picture_container {
    background: #f4f4f4;
  }

  /* mailbox END */
}

@media screen and (max-width: 768px) {

  /* mailbox START */
  .mailbox_banner {
    height: 320px;
  }

  .mailbox_banner .center .explain .explain_title {
    font-size: 26px;
  }

  .mailbox_banner .center .explain .explain_content {
    margin-top: 15px;
    height: 32px;
    line-height: 32px;
    font-size: 14px;
  }

  .mailbox_banner .center .explain .explain_content .iconfont {
    font-size: 16px;
  }

  .mailbox_banner .center .explain .explain_link {
    margin-top: 30px;
  }

  .mailbox .main {
    padding: 40px 0;
  }

  .mailbox .main .main_title .main_title_desc {
    margin-top: 10px;
  }

  .mailbox .main1 .list {
    /* 允许换行 */
    -webkit-box-lines: multiple;
    -webkit-flex-wrap: wrap;
    -moz-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    -o-flex-wrap: wrap;
    flex-wrap: wrap;
  }

  .mailbox .main1 .item {
    width: 100%;
    max-width: 370px;
  }

  .mailbox .main1 .item.item_left {
    margin-top: 0;
  }

  .mailbox .main1 .item.item_right {
    margin-left: 0;
    margin-top: 30px;
  }

  .mailbox .main1 .item .explain_list .explain_list_item {
    -o-animation-delay: 0.5s !important;
    -moz-animation-delay: 0.5s !important;
    -webkit-animation-delay: 0.5s !important;
    animation-delay: 0.5s !important;
  }

  .mailbox .main2 .main_container .list {
    /* 允许换行 */
    -webkit-box-lines: multiple;
    -webkit-flex-wrap: wrap;
    -moz-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    -o-flex-wrap: wrap;
    flex-wrap: wrap;
  }

  .mailbox .main2 .main_container .item {
    width: 48%;
    padding: 0 15px;
    margin-top: 15px;
  }

  .mailbox .main2 .main_container .item:not(:nth-child(4n)) {
    margin-right: 0;
  }

  .mailbox .main2 .main_container .item:not(:nth-child(2n)) {
    margin-right: 4%;
  }

  .mailbox .main2 .main_container .item:nth-child(1),
  .mailbox .main2 .main_container .item:nth-child(2) {
    margin-top: 0;
  }

  .mailbox .main2 .main_container .item:hover .item_picture {
    -o-transform: translate(0, 0);
    -moz-transform: translate(0, 0);
    -webkit-transform: translate(0, 0);
    transform: translate(0, 0);
  }

  .mailbox .main2 .main_container .item:hover .explain .explain_title {
    -o-transform: translate(0, 0);
    -moz-transform: translate(0, 0);
    -webkit-transform: translate(0, 0);
    transform: translate(0, 0);
  }

  .mailbox .main2 .main_container .item:hover .explain .explain_content {
    -o-transform: translate(0, 0);
    -moz-transform: translate(0, 0);
    -webkit-transform: translate(0, 0);
    transform: translate(0, 0);
  }

  .mailbox .main2 .main_container .item .explain .explain_title {
    font-size: 16px;
    font-weight: bold;
    padding: 5px 0 10px;
  }

  .mailbox .main5 .item {
    width: 32%;
    margin-top: 20px;
  }

  .mailbox .main5 .item:not(:nth-child(4n)) {
    margin-right: 0;
  }

  .mailbox .main5 .item:not(:nth-child(3n)) {
    margin-right: 2%;
  }

  .mailbox .main5 .item .item_container:hover {
    -o-transform: translateZ(0) scale(1);
    -moz-transform: translateZ(0) scale(1);
    -webkit-transform: translateZ(0) scale(1);
    transform: translateZ(0) scale(1);
  }

  .mailbox .main6 .main_title .explain_link {
    width: 170px;
    padding: 6px 0;
    font-size: 14px;
    margin: 20px auto 30px;
  }

  /* mailbox END */
}

@media screen and (max-width: 480px) {

  /* mailbox START */
  .mailbox_banner {
    height: 280px;
  }

  .mailbox_banner .center {
    padding: 0 15px;
    width: 100%;
  }

  .mailbox_banner .center .explain {
    width: 100%;
  }

  .mailbox_banner .center .explain .explain_title {
    font-size: 22px;
  }

  .mailbox_banner .center .explain .explain_content {
    margin-top: 10px;
    font-size: 12px;
    width: 100%;
    height: auto;
    padding: 5px 10px;
    line-height: 20px;
    white-space: normal;
  }

  .mailbox_banner .center .explain .explain_content .iconfont {
    font-size: 14px;
    position: absolute;
    left: 10px;
    top: 7px;
  }

  .mailbox_banner .center .explain .explain_content p {
    text-indent: 18px;
  }

  .mailbox_banner .center .explain .explain_link {
    margin-top: 20px;
    line-height: 24px;
    width: 160px;
    font-size: 16px;
    text-indent: 2px;
    letter-spacing: 2px;
  }

  .mailbox .main {
    padding: 30px 0;
  }

  .mailbox .main .main_title .main_title_text {
    font-size: 20px;
  }

  .mailbox .main .main_title .main_title_desc {
    margin-top: 5px;
    font-size: 12px;
  }

  .mailbox .main1 .item {
    max-width: 100%;
    padding: 20px;
  }

  .mailbox .main1 .item.item_right {
    margin-top: 20px;
  }

  .mailbox .main1 .item .explain .explain_title {
    font-size: 20px;
    margin-bottom: 5px;
    letter-spacing: 1px;
  }

  .mailbox .main1 .item .explain .explain_desc {
    font-size: 12px;
    margin-bottom: 15px;
  }

  .mailbox .main1 .item .explain .explain_content {
    font-size: 16px;
    line-height: 36px;
    margin-bottom: 20px;
  }

  .mailbox .main1 .item .explain .explain_content span {
    font-size: 26px;
  }

  .mailbox .main1 .item .explain .explain_content span+p {
    font-size: 12px;
    margin-left: 3px;
    line-height: 28px;
  }

  .mailbox .main1 .item .explain .explain_link {
    max-width: 100%;
    margin-bottom: 20px;
  }

  .mailbox .main1 .item .line {
    margin-bottom: 20px;
  }

  .mailbox .main1 .item .explain_list .explain_list_item:not(:last-child) {
    margin-bottom: 14px;
  }

  .mailbox .main2 .main_container .item {
    width: 100%;
    padding: 10px 15px 20px;
    background: #fff;
    border-radius: 5px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.05);
  }

  .mailbox .main2 .main_container .item:not(:nth-child(2n)) {
    margin-right: 0;
  }

  .mailbox .main2 .main_container .item:nth-child(1),
  .mailbox .main2 .main_container .item:nth-child(2) {
    margin-top: 15px;
  }

  .mailbox .main_list .main_container {
    margin-top: 30px;
  }

  .mailbox .main_list .list {
    /* 允许换行 */
    -webkit-box-lines: multiple;
    -webkit-flex-wrap: wrap;
    -moz-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    -o-flex-wrap: wrap;
    flex-wrap: wrap;
  }

  .mailbox .main_list .list .item {
    margin-top: 30px;
  }

  .mailbox .main_list .list .item:nth-child(1),
  .mailbox .main_list .list .item:nth-child(2) {
    margin-top: 0;
  }

  .mailbox .main_list .item {
    width: 48%;
    margin-top: 30px;
  }

  .mailbox .main_list .item:not(:nth-child(4n)) {
    margin-right: 0;
  }

  .mailbox .main_list .item:not(:nth-child(2n)) {
    margin-right: 4%;
  }

  .mailbox .main_list .list_container_hide {
    display: none;
  }

  .mailbox .main_list .list_control {
    margin-top: 30px;
  }

  .mailbox .main5 .main_container {
    margin-top: 0;
  }

  .mailbox .main5 .item {
    width: 48%;
  }

  .mailbox .main5 .item:not(:nth-child(3n)) {
    margin-right: 0;
  }

  .mailbox .main5 .item:not(:nth-child(2n)) {
    margin-right: 4%;
  }

  .mailbox .main5 .item .item_container:hover {
    -o-transform: translateZ(0) scale(1);
    -moz-transform: translateZ(0) scale(1);
    -webkit-transform: translateZ(0) scale(1);
    transform: translateZ(0) scale(1);
  }

  .mailbox .main6 .main_container .list {
    /* 允许换行 */
    -webkit-box-lines: multiple;
    -webkit-flex-wrap: wrap;
    -moz-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    -o-flex-wrap: wrap;
    flex-wrap: wrap;
  }

  .mailbox .main6 .main_container .list .item {
    width: 100%;
  }

  .mailbox .main6 .main_container .list .item:not(:first-child) {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #eee;
  }

  /* mailbox END */
}