.item-div {
  width: 100%;
  line-height: 110px;
  height: 110px;
  text-align: center;
  overflow: hidden;
}

* {
  margin: 0;
  padding: 0;
  font-family: "微软雅黑";
  font-size: 16px;
}

a {
  text-decoration: none;
}

.item {
  width: 20%;
  float: left;
  overflow: hidden;
}

.item-img {
  display: block;
  overflow: hidden;
  max-height: 252px;
}

.item-div {
  font-size: 26px;
}

.item-a {
  display: block;
  width: 100%;
  overflow: hidden;
}

.item-box {
  width: 100%;
  overflow: hidden;
  position: relative;
}

.item-button {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 40%;
  line-height: 32px;
  letter-spacing: 5px;
  border: 2px solid white;
  background-color: transparent;
  margin-top: -20px;
  color: white;
  font-size: 16px;
  display: none;
  overflow: hidden;
}

.item-a:hover .item-img {
  -webkit-filter: brightness(.3);
  -moz-filter: brightness(.3);
  filter: brightness(.3);
}

.item-z {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 999;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
}

.item-b {
  position: absolute;
  width: 50%;
  background-color: white;
  height: 610px;
  left: 50%;
  top: 50%;
  border-radius: 3px;
  overflow: hidden;
  margin-top: -305px;
  /* animation: rotateplane 1.2s ease-in-out; */
  display: none;
}

@keyframes rotateplane {
  0% {
    /* -webkit-transform: perspective(0px) */
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(180deg);
    /* -webkit-transform: perspective(0px) rotateX(180deg) */
  }
}

.close {
  position: absolute;
  top: 10px;
  right: 10px;
}

.img {
  display: block;
  margin: 36px auto 10px;
}

.item-b h1 {
  width: 80%;
  color: black;
  line-height: 24px;
  font-weight: normal;
  font-size: 20px;
  letter-spacing: 2px;
  margin: 0 auto;
  border-bottom: 1px solid #cccccc;
  padding-bottom: 6px;
  margin-bottom: 6px;
}

.abbr {
  width: 100%;
  display: block;
  height: 1px;
  background-color: #e3e3e3;
}

.item-b p {
  width: 80%;
  margin: 0 auto;
  color: black;
  font-size: 15px;
  letter-spacing: 2px;
}

.bth {
  width: 120px;
  line-height: 32px;
  background-color: #00acd7;
  outline: none;
  border-radius: 3px;
  color: white;
  font-size: 14px;
  display: block;
  margin: 44px auto 0;
  display: block;
  text-align: center;
}

.footer {
  display: block;
  width: 100%;
  background: #004696;
  color: white;
  text-align: center;
  margin: 0;
  padding: 40px 0 60px 0;
}

a,
button,
img:hover {
  cursor: pointer;
}

.item-a:hover .item-div {
  background-color: #e74829 !important;
  color: white !important;
}