.fl{
    float:left;
}
.fr{
    float:right;
}
.text-align-center{
    text-align: center;
}
.text-align-left{
    text-align: left;
}
.clearfix:after{
    content:"";
    display: block;
    height:0;
    clear:both;
}
.clearfix{
    zoom:1;
}