#guide {
  background-image: url(../image/center/banenr.jpg);
}
.center_tip {
  margin-top: 38px;
  background: url("../image/center/banner1.jpg") no-repeat center/cover;
  height: 350px;
  min-width: 1200px;
}
.center_tip .context {
  width: 50%;
  margin-left: 50%;
  padding-top: 90px;
  font-size: 16px;
  color: #000;
  line-height: 32px;
}
.center_tip .context .title {
  position: relative;
  font-size: 22px;
  font-weight: bold;
  color: #ac0008;
  padding-bottom: 27px;
  margin-bottom: 27px;
}
.center_tip .context .title:after {
  content: '';
  position: absolute;
  left: 0;
  width: 85px;
  height: 1px;
  background: #ac0008;
  font-size: 0;
  bottom: 0;
}
.quality_slider {
  height: 360px;
  display: flex;
  width: 1200px;
  margin: 80px auto 120px;
  position: relative;
}
.quality_slider .banner {
  width: 147px;
  border-left: 1px solid #ffffff;
  position: relative;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: right;
  -moz-transition: all 0.5s ease-in-out;
  -o-transition: all 0.5s ease-in-out;
  -webkit-transition: all 0.5s ease-in-out;
  transition: all 0.5s ease-in-out;
  transition-property: width;
}
.quality_slider .banner div.num {
  position: absolute;
  right: 58px;
  bottom: 42px;
  font-size: 16px;
  text-align: right;
  color: #ffffff;
  opacity: 0;
}
.quality_slider .banner div.num p.num {
  font-size: 36px;
  margin-top: 10px;
}
.quality_slider .banner div.num .title {
  font-size: 22px;
  margin-top: 24px;
  font-weight: bold;
}
.quality_slider .banner i {
  display: block;
  width: 100%;
  height: 100%;
  background: #000000;
  opacity: 0.5;
}
.quality_slider .banner.active {
  border: none;
  width: 748px;
  background-position: center;
}
.quality_slider .banner.active i {
  opacity: 0;
}
.quality_slider .banner.active div.num {
  opacity: 1;
}