* {
  margin: 0;
  padding: 0;
  font-family: "微软雅黑";
  font-size: 16px;
}
li {
  list-style: none;
}
a {
  text-decoration: none;
}
#ppt{
  width: 485px;
  height: 270px;
  overflow: hidden;
  position: relative;
}
#ppt #imgul{
  width: 1455px;
  left: 0;
  height: 270px;
  position: relative;
}
#ppt #imgul li{
  float: left;
  width: 485px;
  height: 270px;
}
#imgul p {
  width: 485px;
  height: 35px;
  background:rgba(41,36,33,0.5);
  filter: progid:DXImageTransform.Microsoft.gradient(startcolorstr=#7F000000,endcolorstr=#7F000000);
  position: absolute;
  top: 235px;
  text-align: center;
  color: #ffffff;
  line-height: 35px;
  font-size: 18px;
  font-weight: bold;
  *left: 0px;
}

.btn{
  position: relative;
  /*visibility: hidden;*/
}

.btn #prev1 {
  /*width: 40px;*/
  /*background: rgba(41,36,33,0.5);*/
  /*background:rgba(0,0,0,0.5);*/
  /*filter: progid:DXImageTransform.Microsoft.gradient(startcolorstr=#7F000000,endcolorstr=#7F000000);*/
  /*text-align: center;*/
  /*display: block;*/
  /*line-height: 60px;*/
  /*font-size: 30px;*/
  /*font-weight: bold;*/
  /*color: #ffffff;*/
  position: absolute;
  left: 0px;
  top: -215px;
}
.btn #next1{
  /*width: 40px;*/
  /*background: rgba(41,36,33,0.5);*/
  /*background:rgba(0,0,0,0.5);*/
  /*filter: progid:DXImageTransform.Microsoft.gradient(startcolorstr=#7F000000,endcolorstr=#7F000000);*/
  /*text-align: center;*/
  /*display: block;*/
  /*line-height: 60px;*/
  /*font-size: 30px;*/
  /*font-weight: bold;*/
  /*color: #ffffff;*/
  position: absolute;
  left: 445px;
  top: -210px;
}
.banner{
  width: 485px;
  height: 30px;
  background: #f6f6f6;
}
.banner ul {
  position: relative;
  left: 187px;
  top: 10px;
  _margin-left: 170px;
  _margin-top: 20px;
}
.banner ul li{
  /*display: inline-block;*/
  float: left;
  margin-left: 5px;
  width: 30px;
  _height: 1px;
  zoom: 1;
  height: 10px;
  background-color: #808080;
  display: inline;
  /*z-index: 10;*/
}
.banner ul li:hover{
  cursor: pointer;
}
.banner .selected{
  background-color: red;
}