body {
  font: 15px/16px Arial;
  
}

position {
  position: fixed;
  
}


body2 {
  font: 15px/16px Arial;
}

body3 {
  font: 10px/10px Arial;
}


ul, li {
  padding: 0;
  margin: 0;
}
.tabs {
  margin-bottom: 20px;
}
.tabs li {
  display: inline-block;
  background-color: #333;  
}
.tabs li a {
  color: #fff;
  text-decoration: none;
  display: inline-block;
  padding: 0 10px;
  height: 30px;
  line-height: 30px;
}
.tabs-content {
  width:640px;
  height:100px;
  overflow:hidden;
}
.tabs-content ul {
  list-style: none;
  height: 120px;
  overflow: scroll;
  overflow-y: hidden;
}
.tabs-content ul li {
  width:638px;
  height:98px;
  border: 1px dashed red;
}
.tabs-content ul li div {
  padding: 20px;
}