* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  background-color: #F4F4F4;
  position: relative;
}
.clearfix:before {
  display: table;
  content: " ";
}
.clearfix:after {
  clear: both;
  display: table;
  content: " ";
}
.pull-left {
  float: left;
}
.pull-right {
  float: right;
}
.banner {
  width: 1200px;
  margin: 20px auto;
  position: relative;
}
.banner .banner-left {
  width: 270px;
  float: left;
}
.banner .banner-right {
  width: 900px;
  float: right;
  padding: 15px 30px 30px 30px;
  box-sizing: border-box;
  background-color: #fff;
  border-radius: 10px;
  box-shadow: 1px 1px 10px rgba(0, 0, 0, 0.4);
  -webkit-box-shadow: 1px 1px 10px rgba(0, 0, 0, 0.4);
}
.banner:before {
  display: table;
  content: " ";
}
.banner:after {
  clear: both;
  display: table;
  content: " ";
}
.hotnews-left {
  width: 100%;
  position: relative;
}