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Updated by Neha Tewari on Jun 15, 2021
Neha Tewari Neha Tewari
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The Ultimate CSS Selectors Cheat Sheet You Must Know

As a front-end developer, there are many times when you say, “What’s that property that takes child elements and applies CSS?” or something on the same thoughts. CSS is endless when you start to learn it.



What are CSS selectors?

CSS selectors are a part of the CSS rule set that selects the element we want to style. They are used in the CSS file or inside the “style” tag while declaring the CSS. CSS selectors play an essential role in applying the style to multiple elements at once. We can use the inline CSS using the “style” attribute.


CSS Simple Selectors

The first in our list of CSS selectors cheat sheet is the Simple selectors. Simple selectors in CSS do not include any hierarchical wraps or too much logic in the CSS. CSS simple selectors just locate the element through the identifier and implement the style.


CSS Tag Selector

The easiest CSS selector to apply is to catch the “tag” from the HTML and implement the styling on it. “Tags” are the predefined HTML tags, and with CSS selectors, you can catch them all with just a single line. In the following example, we selected the tag “H1” from the HTML code and fixed its text color as red and font size as 50px.


Grouping the CSS Selectors

A lot of the time, multiple elements will have the same styling configurations on a web page. So, instead of copy-pasting the same configuration multiple times for different IDs or classes, we can group them and let the web page know that these elements will share some common styling.



The CSS selectors are an essential part of the specification that gets many new additions with every release. Not only does it bring down the redundant code from the HTML file, but it also improves efficiency and helps us stylize the web page more freely.

While all the advanced CSS Selectors offer high cross-browser compatibility, a developer always needs to perform browser compatibility testing to ensure no browser compatibility issues occur.