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css

Optional. Adds a CSS class(es) to the component

css?: string;

Example​

<style>
    .custom {
        --dhx-font-weight-regular: 500;
        --dhx-font-color-primary: #0ab169;
    }
    .custom .dhx_tree-folder  {
        --dhx-font-color-primary: #0288d1;
    }
</style>

<script>
    const tree = new dhx.Tree("tree_container", {
        css: "custom"
    });
</script>

Related samples:

Note, that the DHTMLX library provides a set of own CSS classes that you can also apply to change the appearance of Tree:

const tree = new dhx.Tree("tree_container", {
    css: "dhx_widget--bg-gray"
});

Related articles: