body {
  min-width: 1200px;
  margin: 0 auto;
  overflow: auto;
  background-color: #fff;
}
.header {
  background-color: #fff;
  border-bottom: 1px solid #eee;
}
/*导航*/
.case_nav {
  background-color: #fff;
  border-bottom: 1px solid #dfdfdf;
}

.inv-type {
  width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.inv-type .tab {
  position: relative;
  cursor: pointer;
  display: inline-block;
  width: 87px;
  height: 41px;
  font-size: 16px;
  line-height: 45px;
  text-align: center;
  color: #3b3b3b;
  margin-bottom: 10px;
}

.case_nav .inv-type .tab-active {
  border-bottom: 4px solid #ffcb2f;
}

/*用户案例*/
.case-title {
  width: 100%;
  // height: 163px;
  // background: url(../images/yonghuanli@2x.png) center no-repeat;
}
.case-title img {
  width: 100%;
}
.case-list {
  width: 1200px;
  margin: 0 auto;
}
.case-list ul {
  padding: 40px 0;
}
.case-list li {
  width: 220px;
  height: 220px;
  float: left;
  margin-right: 25px;
  margin-bottom: 60px;
  position: relative;
  border: 1px solid #eaeaea;
  box-sizing: border-box;
}
.case-list li:nth-of-type(5n) {
  margin-right: 0;
}
.case-list li img {
  width: 100%;
  height: 100%;
}
.case-list li .case-code {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  /* background-color: rgba(0, 0, 0, 0.6); */
  transition: all 0.5s;
  opacity: 0;
  color: #fff;
  box-sizing: border-box;
  padding: 0 5%;
  opacity: 1;
}
/* .case-list li:hover .case-code{
    opacity: 1;
} */
.case-list .case-code h3 {
  font-size: 18px;
  text-align: center;
  line-height: 1.5;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-weight: normal;
  margin: 5px 0;
}
.case-list .case-code img {
  width: 160px;
  height: 160px;
  margin: 0 auto;
}
.case-list .case-code p {
  font-size: 16px;
  font-weight: normal;
  text-align: center;
  line-height: 3;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.cc_name {
  text-align: center;
  height: 40px;
  line-height: 40px;
  font-size: 20px;
  margin-top: 10px;
}