css

Optional. The name of a CSS class(es) applied to the control group

css?: string;

Example

<style>
    .custom {
        --dhx-background-primary: rgb(238, 238, 238);
        --dhx-color-primary: #118d8d;
        --dhx-color-primary-active: #118d8d;
        --dhx-color-primary-hover: #1ad1d1;
    }
</style>

<script>
    const form = new dhx.Form("form_container", {
        padding: 40,
        width: 400,
        css: "custom",
        rows: [
            {
                type: "input",
                label: "Name",
                placeholder: "John Doe",
            },
            {
                type: "input",
                label: "Email",
                placeholder: "jd@mail.name"
            },
            // more controls
        ]
    });
</script>

Related sample: Form. Styling (custom CSS)

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

const form = new dhx.Form("form_container", {
    css: "dhx_widget--bg_white"
});

Related articles:

Example​

Example