.container {
   text-align: center;
}
/*index.html*/
.containers {
    width: 61%;
    margin: 1% auto ;
    height: 80vh;
}
.fenlei{
    margin: 5px 0;background-color: #f0f0f0;
    border-radius: 10px;padding: 10px 20px ; 
}
.fenlei h4{
    margin: 5px 0;
}
.containers ul {
    padding-left: 20px;margin: 0;
}

.containers ul li {
    line-height: 2.3;float: left;margin-left: 25px;
}
.discontent{
   clear:both
}
.containers  ul li a {
    color: #20a53a
}
footer{
    text-align: center;
    height: 50px;
}