.kefu_53{
    width: 112px;
    position: fixed;
    overflow: hidden;
    top:50%;
    margin-top: -190px;
    z-index: 20;
}
.kefu_53>.title{
    width: 100%;
    text-align: center;
    position: relative;
    z-index: 10;
}
.kefu_53>.title>img{
    width: 80%;
}
.kefu_53>.button_53{
    width: 100%;
    display: block;
    height: 52px;
    text-align: center;
}
.kefu_53>.button_53>.zhong{
    display: inline-block;
    height: 100%;
    width: 0;
}
.kefu_53>.button_53>span{
    font-size: 18px;
    color: #fff;
    vertical-align: middle;
}
.kefu_53>.button_53_1{
    position: relative;
    top:-12px;
    background: url("../img/button_53_01.jpg") no-repeat center;
}
.kefu_53>.button_53_2{
    position: relative;
    top:-12px;
    background: url("../img/button_53_02.jpg") no-repeat center;
}
.kefu_53>.button_53_3{
    position: relative;
    top:-12px;
    background: url("../img/button_53_03.jpg") no-repeat center;
}
.kefu_53>.button_53_4{
    position: relative;
    top:-12px;
    background: url("../img/button_53_04.jpg") no-repeat center;
}
.kefu_53>.button_53_4-2{
    position: relative;
    top:-12px;
    background: url("../img/button_53_04_b2.jpg") no-repeat center;
}
.kefu_53>.button_53_5{
    position: relative;
    top:-12px;
    background: url("../img/button_53_05.jpg") no-repeat center;
}
.kefu_53>.button_53_6{
    position: relative;
    top:-12px;
    background: url("../img/button_53_06.jpg") no-repeat center;
}
.kefu_53>.button_53_6>span{
    width: 50%;
    display: inline-block;
}
/*hover字体变色*/
.kefu_53>.button_53_1:hover{
    background: url("../img/button_53_01_true.jpg") no-repeat center;
}
.kefu_53>.button_53_2:hover{
    background: url("../img/button_53_02_true.jpg") no-repeat center;
}
.kefu_53>.button_53_3:hover{
    background: url("../img/button_53_03_true.jpg") no-repeat center;
}
.kefu_53>.button_53_4:hover{
    background: url("../img/button_53_04_true.jpg") no-repeat center;
}
.kefu_53>.button_53_4-2:hover{
    background: url("../img/button_53_04_b2_true.jpg") no-repeat center;
}
.kefu_53>.button_53_5:hover{
    background: url("../img/button_53_05_true.jpg") no-repeat center;
}
.kefu_53>.button_53_6:hover{
    background: url("../img/button_53_06_true.jpg") no-repeat center;
}