* {
    border: none;
    list-style: none;
    margin: 0;
    padding: 0;
    font-style: normal;
}
.focus {
    margin: 0 auto;
    clear: both;
    overflow: hidden;
    position: relative;
}
.focus .hd {
  bottom: 1em;
  position: absolute;
  text-align: center;
  width: 100%;
  z-index: 1;
}
.focus .hd ul {
    font-size: 0;
    margin-bottom: 0;
}
.focus .hd ul li {
  background-color: #666;
  border: 2px solid #fff;
  border-radius: 5px;
  transition: all .5s;
  display: inline-block;
  line-height: 0;
  margin: 0 5px;
  overflow: hidden;
  padding: 3px;
  opacity: 0.5;
}
.focus .hd ul .on,.focus .hd ul li:hover{
    background-color: #f00;
    padding: 3px 25px;
}
.focus:hover .hd ul li{opacity: 0.8;cursor: pointer; padding: 3px 25px;}
.focus .bd {
    position: relative;
    z-index: 0;
}
.focus .bd li a {
  background-position: center center;
  background-repeat: no-repeat;
  background-size: cover;
  background-color: #666;
  color: #fff;
  display: block;
  padding: 8% 0;
  overflow: hidden;
}
.focus .title{font-size: 2.5em;height: 1.35em;margin-left: 10%;overflow: hidden;}
.focus .dec{margin-left:10%;font-size: 1.25em;height: 4.5em;line-height: 1.5;margin-top: 2em;overflow: hidden;width: 60%;}
.focus .bd li .tit {
    background-color: rgba(0, 0, 0, 0.2);
    bottom: 0;
    color: #fff;
    display: block;
    height: 28px;
    line-height: 28px;
    position: absolute;
    text-indent: 10px;
    width: 100%;
}
@media screen and (max-width:768px){
    .focus .bd li a {font-size: 14px;}
    .focus .dec{width: 80%;}
}
@media screen and (max-width:480px){
    .focus .bd li a {font-size: 12px;}
    .focus .title{font-size:2em}
}