* {
  margin: 0;
  padding: 0;
}
li {
  list-style: none outside none;
}
.silder-box {
  position: relative;
  padding: 50px 0 50px 0;
}
.silder {
  margin: 0 auto 0;
}
.silder li {
    width: 395px;
    height: 248px;
    float: left;
    margin-right: 60px;
    background-color: #fff;
}
.silder li img {
  width: 100%;
  height: 100%;
}
.silder-button {
  top: 160px;
  width: 25px;
  height: 54px;
  position: absolute;
  cursor: pointer;
}
.silder-button.btl {
  left: 10px;
  width: 28px;
  height: 28px;
  text-align: center;
  color: #999999;
  line-height: 28px;
  font-size: 16px;
  font-weight: bold;
  border: 2px solid #999999;
  border-radius: 50%;
}
.silder-button.btr {
  right: 10px;
  width: 28px;
  height: 28px;
  text-align: center;
  color: #999999;
  line-height: 28px;
  font-size: 16px;
  font-weight: bold;
  border: 2px solid #999999;
  border-radius: 50%;
}

.silder-box-1 {
  width: 1365px;
}
.small-navs {
  position: absolute;
}