#cover_img{ 
    width:300px;
    height:200px;
}

.wailian li{ float:left}
.wailian li a {
background: #428BCA;
border: 1px solid #e9e9e9;
display: block;
text-align: center;
margin-left: 15px;
margin-bottom: 5px;
padding: 0 4px;
border-radius: 2px;
width:147px;
color: #F5F5F5;
line-height: 30px;
white-space:nowrap;
overflow:hidden;
}
.wailian li a:hover {
   color: red;

}