multiple classes on single element html [closed]

Question

Is it a good practice to use many classes on one single HTML element? For example:

<div class="nav nav-centered nav-reversed navbar navigation-block"></div> 

I don't mean that two or three classes on one element is bad, but how about four, five or even six?

Answer 1

Short Answer

Yes.

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Explanation

It is a good practice since an element can be a part of different groups, and you may want specific elements to be a part of more than one group. The element can hold an infinite number of classes in HTML5, while in HTML4 you are limited by a specific length.

The following example will show you the use of multiple classes.

The first class makes the text color red.

The second class makes the background-color blue.

See how the DOM Element with multiple classes will behave, it will wear both CSS statements at the same time.

Result: multiple CSS statements in different classes will stack up.

You can read more about CSS Specificity.

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CSS

.class1 {     color:red; }  .class2 {     background-color:blue; } 

HTML

<div class="class1">text 1</div> <div class="class2">text 2</div> <div class="class1 class2">text 3</div> 

Live demo