.main a {
  color: #333;
}
.ztlist {
  width: 1200px;
}
.ztlist li {
  width: 351px;
  float: left;
  margin: 0 15px 15px 0;
  overflow: hidden;
  padding: 15px;
  border: 1px solid #ddd;
  background: #fff;
}
.ztlist li a {
  display: block;
  width: 100%;
  height: 160px;
  overflow: hidden;
}
.ztlist img {
  width: 100%;
  height: auto;
}
.ztlist li s {
  display: block;
  height: 80px;
  overflow: hidden;
  margin-top: 8px;
  text-decoration: none;
  font-style: normal;
  font-size: 12px;
}
.ztlist li s a {
  height: 30px;
  line-height: 30px;
  overflow: hidden;
  font-size: 16px;
  font-weight: bold;
}
.ztlist p {
  line-height: 27px;
  font-size: 13px;
  color: #333;
}
@media screen and (max-width: 750px) {
  .ztlist {
    width: 100%;
  }
   .ztlist li, .ztlist li a,.ztlist img{
       width: 100%;
  }
  .ztlist li s{
      height: auto;
  }
  .ztlist p{
      height: 50px;
  }
  .ztlist li{
      float: none;
      margin: 15px auto;
  }
}