javascript add style to element by class

sure! in javascript, you can add styles to an element by selecting it using its class name. here's a tutorial on how to do it with an example code:

2. **access the style property of the element**: once you have selected the element, you can access its `style` property to set specific css styles.

3. **add the styles**: use the style properties you want to add to the element. for example, to change the background color, you can use `backgroundcolor`, and to change the font color, you can use `color`.

here's an example code snippet to add styles to an element with a specific class name:

you can customize the styles as per your requirements by accessing different css properties through the element's `style` property.

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