.chat{ background:#fff; width:250px; overflow:hidden; position:fixed; z-index:1000; bottom:20px;box-shadow: 0px 0px 10px 10PX #CCCCCC; right:20px; border:1px solid #CCC; border-radius:6px;}
.chat dd{ height:50px; background:#2565f2; width:100%; line-height:50px; padding-left:20px; color:#FFF;}
#small_button{
    display: block;
    height: 40px;
    width: 40px;
    position: absolute;
    top: 0;
    right: 0;
    cursor: pointer;}
.down{background: url(/css/up.png) center center no-repeat;}
.up{background: url(/css/down.png) center center no-repeat;}
.chat ul{ padding-left:20px; padding-right:20px;}
.chat li{ line-height:30px; color:#333; font-size:14px; margin-bottom:6px;}
.form-controlss{ width:calc(100% - 20px);padding: 10px 10px; height:60px;border: 1px solid #DCDFE6;border-radius: 4px;font-size: 12px;outline: 0;
}
.chat_input{ height:30px; line-height:30px;border: 1px solid #DCDFE6;border-radius: 4px;font-size: 12px;outline: 0;width:calc(100% - 20px);padding: 0px 10px;}
.chat_submit{ height:30px; line-height:30px; background:#2565f2; border:0px; border-radius: 4px;font-size: 12px;outline: 0;width:100%; font-size:14px; font-weight:bold; color:#FFF; margin-bottom:10px;}