SOURCE

<div>
  <header class="class1">
    <div class="class2">
    <h3>篮球资讯 </h3>东方体育》篮球新闻》》正文
    <hr />

.class1{
  
}
.class2{
  background-color:#FF4500;
  width:2opx;
  height:26px;
}