index.less

.ant-tree-switcher{
    padding-top: 4px;
}
.bgs{
    width: 22px;
    height: 22px;
    background-color: rgba(255,255,255,1);
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 0 8px #eee;
    >svg{
        zoom:0.9
    }
}