.by_top_bg {
  width: 100%;
  height: 546px;
  background: url(zxfw_bg_20191114.jpg) no-repeat center top;
}
.by_top {
  width: 1300px;
  height: 546px;
  margin: 0 auto;
}
.by_topl {
  float: left;
  margin-top: 20px;
}
.by_topr {
  float: right;
}
.by_topr li {
  margin-top: 18px;
}
.by_bottom {
  width: 1300px;
  height: 118px;
  margin: 0 auto;
  padding-left: 15px;
  position: relative;
  font: 16px/38px "microsoftyahei";
}
.by_bottom .box {
  overflow: hidden;
  position: relative;
  width: 99%;
  height: 140px;
  /* margin: 0 auto; */
}
.by_bottom .list {
  overflow: hidden;
  width: 99999px;
}
.by_bottom .prev {
  position: absolute;
  top: 50px;
  width: 45px;
  height: 42px;
  left: -30px;
  background: url(zxfw_left_20191114.jpg) no-repeat left;
  cursor: pointer;
  z-index: 10000;
}
.by_bottom .next {
  position: absolute;
  top: 50px;
  width: 45px;
  height: 42px;
  right: -30px;
  background: url(zxfw_right_20191114.jpg) no-repeat right;
  cursor: pointer;
  z-index: 10000;
}
.by_bottom li {
  float: left;
  margin-top: 20px;
  width: 239px;
  height: 118px;
  padding-left: 16px;
  border: 1px solid #f0f0f2;
  position: relative;
}
.by_bottom li:hover {
  transition: all .0s ease;
  box-shadow: 0 0 10px #70caf7;
  border: 1px solid #70caf7;
}
.by_bottom li a:hover{text-decoration: none;}
.by_bottom li a img{position: absolute;right: 15px;top: 10px;}
.by_bottom li a .littleTitle{font-size: 15px;color:#999999;line-height:42px}
.by_bottom .ul_l1 {
  background: url(zxfw_icon1_20191114.jpg) no-repeat right 5px;
}
.by_bottom .ul_l2 {
  background: url(zxfw_icon2_20191114.jpg) no-repeat right 5px;
}
.by_bottom .ul_l3 {
  background: url(zxfw_icon3_20191114.jpg) no-repeat right 5px;
}
.by_bottom .ul_l4 {
  background: url(zxfw_icon4_20191114.jpg) no-repeat right 5px;
}
.by_bottom .ul_l5 {
  background: url(zxfw_icon5_20191114.jpg) no-repeat right 5px;
}
.by_bottom p {
  font: 20px/64px "microsoftyahei";
}