---
title: "Theming"
groupTitle: "Introduction"
sort: 3
---

You can customize the look and feel of the driver by adding custom class to popover or applying CSS to different classes used by driver.js.

## Styling Popover

You can set the `popoverClass` option globally in the driver configuration or at the step level to apply custom class to the popover and then use CSS to apply styles.

```js
const driverObj = driver({
  popoverClass: 'my-custom-popover-class'
});

// or you can also have different classes for different steps
const driverObj2 = driver({
  steps: [
    {
      element: '#some-element',
      popover: {
        title: 'Title',
        description: 'Description',
        popoverClass: 'my-custom-popover-class'
      }
    }
  ],
})
```

Here is the list of classes applied to the popover which you can use in conjunction with `popoverClass` option to apply custom styles on the popover.

```css
/* Class assigned to popover wrapper */
.driver-popover {}

/* Arrow pointing towards the highlighted element */
.driver-popover-arrow {}

/* Title and description */
.driver-popover-title {}
.driver-popover-description {}

/* Close button displayed on the top right corner */
.driver-popover-close-btn {}

/* Footer of the popover displaying progress and navigation buttons */
.driver-popover-footer {}
.driver-popover-progress-text {}
.driver-popover-prev-btn {}
.driver-popover-next-btn {}
```

Alternatively, you can also use the `onPopoverRendered` hook to modify the popover DOM before it is displayed. The hook is called with the popover DOM as the first argument.

```typescript
type PopoverDOM = {
  wrapper: HTMLElement;
  arrow: HTMLElement;
  title: HTMLElement;
  description: HTMLElement;
  footer: HTMLElement;
  progress: HTMLElement;
  previousButton: HTMLElement;
  nextButton: HTMLElement;
  closeButton: HTMLElement;
  footerButtons: HTMLElement;
};

onPopoverRendered?: (popover: PopoverDOM) => void;
```

## Styling Page

Following classes are applied to the page when the driver is active.

```css
/* Applied to the `body` when the driver: */
.driver-active {}  /* is active */
.driver-fade {}    /* is animated */
.driver-simple {}  /* is not animated */
```

Following classes are applied to the overlay i.e. the lightbox displayed over the page.

```css
.driver-overlay {}
```

## Styling Highlighted Element

Whenever an element is highlighted, the following classes are applied to it.

```css
.driver-active-element {}
```