.drawer{
    width:0px;
    height:100vh;
    background:#FFFFFF;
    z-index: 2;
    position: absolute;
    top:0;
    right:0;
    float:right;
}
.drawer_head{
    width:100%;
    height:40px;
    background:#66afe9;
    overflow:hidden;
}
.close_drawer{
    width:40px;
    height:40px;
    line-height: 40px;
    text-align: center;
    font-weight: 600;
    font-size:15px;
    float:left;
    border-right:1px solid #cdcdcd;
}
.drawer_title{
    width:calc(100% - 41px);
    height:40px;
    line-height: 40px;
    text-align: center;
    font-weight: 600;
    font-size:15px;
    float:left;
}
.drawer_body{
    width:calc(100% - 10px);
    max-height:calc(100vh - 90px);
    padding-left:5px;
    padding-right:5px;
    overflow-y: auto;
}
.drawer_body::-webkit-scrollbar {
    display: none; /* Chrome Safari */
}
.drawer_foot{
    width:calc(100% - 10px);
    height:50px;
    padding-left:5px;
    padding-right:5px;
    border-top:1px solid #cdcdcd;
    padding-top:10px;
    overflow: hidden;
}