element tree label 点击选中

.el-tree-node .el-tree-node__children .el-tree-node__label{
    margin-left:31px;
}
.el-tree-node .el-tree-node__children .el-tree-node__content{
    position: relative;
}
.el-tree-node .el-tree-node__children .el-checkbox{
    width: calc(100% - 6px - 14px);
    height: 100%;
    z-index: 10;
    position: absolute;
    top: 0;
}
.el-tree-node .el-tree-node__children .el-checkbox .el-checkbox__input{
    position: absolute;
    left: 31px;
    top: 6px;
}

只是第二层