@charset "utf-8";
* {
  margin: 0;
  padding: 0;
}
.image_roll {
  position: relative;
}
.image_roll .image_list {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}
.image_roll .image_list a {
  display: block;
  width: 100%;
  height: 100%;
  background-position: center center ;
  background-repeat: no-repeat;
  position: absolute;
  top: 0;
}
.image_roll .btn a {
  text-decoration: none;
  display: block;
  width: 40px;
  height: 70px;
  background: #000;
  position: absolute;
  top: 50%;
  margin-top: -35px;
  color: #fff;
  text-align: center;
  line-height: 70px;
  font-size: 40px;
  font-family: sans-serif;
}
.image_roll .btn a.btn_left {
  left: 0;
}
.image_roll .btn a.btn_right {
  right: 0;
}
.image_roll .dot {
  width: 100%;
  height: 12px;
  position: absolute;
  left: 0;
  bottom: 10px;
  font-size: 0;
  text-align: center;
}
.image_roll .dot span {
  display: inline-block;
  *display: inline;
  *zoom: 1;
  width: 12px;
  height: 12px;
  background: #fff;
  border-radius: 50%;
  margin: 0 5px;
  cursor: pointer;
}
.image_roll .dot span:hover,
.image_roll .dot span.active {
  background: #1B7FCB;
}