.el-drawer__body {overflow: auto}
@media screen and (max-width:540px){
    .messagebox {width: 350px}
}

/* responsive form */
.responsive .el-form-item__label {width: 120px;}
.responsive .el-form-item__content {margin-left: 120px; margin-right: 20px;}
@media screen and (max-width:540px){
    .responsive .el-form-item__label {margin: 0 10px; text-align: left;}
    .responsive .el-form-item__content {margin: 0 10px; clear: left;}
}