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The By.className() method

Before we discuss the className() method, we have to talk a little about style and CSS. Every HTML element on a web page, generally, is styled by the web page developer or designer. It is not mandatory that each element should be styled, but they generally are to make the page appealing to the end user.

So, in order to apply styles to an element, they can be declared directly in the element tag, or placed in a separate file called the CSS file and can be referenced in the element using the class attribute. For instance, a style attribute for a button can be declared in a CSS file as follows:

.buttonStyle{    width: 50px;    height: 50px;    border-radius: 50%;    margin: 0% 2%;}

Now, this style can be applied to the button element ...