Last Updated : 05 Aug, 2025
What is CSS?
CSS i.e. Cascading Style Sheets is a stylesheet language used to describe the presentation of a document written in a markup language such as HTML, XML, etc. CSS enhances the look and feel of the webpage by describing how elements should be rendered on screen or in other media.
What is a CSS Cheat Sheet?
CSS Cheat Sheet provides you with the most common style snippets CSS gradient, background, button, font family, order, radius, box, and text-shadow generators, color picker, and more tools to add more visual weight to your document. All these and other useful web design tools can be found on a single page.
Table of Content:
CSS Basics: Cascading Style Sheet(CSS) is used to set the style in web pages that contain HTML elements, here we will see in how many ways we can add CSS for our HTML, there three different ways to do so one by one we will see those procedure.
External CSS: External CSS contains a separate CSS file with a .css extension which contains only style property with the help of tag attributes.
selector{
property1: value1;
property2: value2;
}
Include external CSS file: The external CSS file is linked to the HTML document using a link tag.
<link rel="stylesheet" type="text/css" href="/style.css" />
Internal CSS or Embedded: CSS is embedded within the HTML file using a style HTML tag.
<style type="text/css">
div { color: #444;}
</style>
Inline CSS: It contains CSS properties in the body section specified within HTML tags.
<tag style="property: value"> </tag>
Clearfix: It clears floats to select or control margins and padding.
.clearfix::after {
content: "";
clear: both;
display: block;
}
Selectors: Used to find or select the HTML elements you want to style. These are categorized as follows:
Basic Selectors Description Syntax Universal Selects all elements on the pages. *{property:value;} Type Selects all HTML tag/element of given type in your document. p {property:value;} Id Selects an element based on the value of its unique id attribute #id {property:value;} Class Selects all elements in the document that have the given class attribute. .class {property:value;} Attribute Selects all elements that have a specified attribute. a[attribute=value] {property:value;} Combinators Complex selectors consisting of more than one selectors having some relationship between them. selector1 selector2/ selector 1+selector2 / selector 1> selector 2 {property: value;} Pseudo Define the special state of an element to add an effect to an existing element based on its states. selector: pseudo-class{
<!DOCTYPE html>
<html>
<head>
<title>* Selectors</title>
<!-- CSS Selectors are in used -->
<style>
/* universal selector */
* {
background-color: hsl(325, 63%, 82%);
text-align: center;
}
/* type selector */
span {
background-color: skyblue;
}
/* id selector */
#div1 {
color: green;
text-align: center;
font-size: 20px;
font-weight: bold;
}
/* class selector */
.div2 {
color: orange;
text-align: left;
font-size: 10px;
font-weight: bold;
}
/* attribute selector */
div[style] {
text-align: center;
color: purple;
font-size: 20px;
font-weight: bold;
margin-bottom: -20px;
}
/* combinator selector */
div>p {
color: #009900;
font-size: 32px;
font-weight: bold;
margin: 0px;
text-align: center;
}
/* class selector */
.box {
background-color: yellow;
width: 300px;
height: 100px;
margin: auto;
font-size: 30px;
text-align: center;
}
/* pseudo selector */
.box:hover {
background-color: orange;
}
</style>
</head>
<body>
<p>
*(Universal) Selector here gives a pink background
</p>
<br>
<span>This span is styled using type selector.
<br><br>
<div id="div1">
This div is styled using id selector
</div>
<br>
<div class="div2 ">
This div is styled using class selector
</div>
<br>
<div style="color:green">
This div is styled using attribute selector
</div>
<br>
<div style="text-align:center;">
This div is styled using combinators
<p>child selector</p>
</div>
<br>
<p>pseudo selector:</p>
<div class="box">
My color changes if you hover over me!
</div>
</body>
</html>
Font Properties: CSS font properties are used to set the font's content of the HTML element as per requirement.
Property Description Syntax Font-family Specifies the font family to be used for the element's text content. font-family:
<!DOCTYPE html>
<html>
<head>
<title>Font properties</title>
<style>
.style1 {
font-family: "Times New Roman", "sans-serif";
font-weight: bold;
font-size: 30px;
color: #090;
text-align: center;
font-style: normal;
font-variant: normal;
}
.style2 {
font-family: "sans-serif";
font-weight: 5px;
font-size: 15px;
color: blueviolet;
text-align: left;
font-style: italic;
font-variant: normal;
}
.style3 {
font-family: "arial";
font-weight: 10px;
font-size: 20px;
color: black;
text-align: right;
font-style: oblique;
font-variant: small-caps;
}
</style>
</head>
<body>
<p>Normal text aligned center sized 10 px</p>
<div class="style1">Geeks for Geeks</div>
<p>Italic text aligned left sized 15px</p>
<div class="style2">Geeks for geeks</div>
<p>Oblique text aligned right sized 20px, in small caps</p>
<div class="style3">Geeks for geeks</div>
</body>
</html>
Text-properties: CSS text formatting properties are used to format and style text by setting their color, alignment, spacing, etc. as per requirement.
Property Description Syntax Text-color Sets the color of the text. color: value; Text-alignment Defines the horizontal alignment of the text. text-align:
<!DOCTYPE html>
<html>
<head>
<title>Text formatting properties</title>
</head>
<body>
<div style=" color: red">
Color property used here
</div>
</br>
<div style=" text-align: center">
Text align property used here
</div>
</br>
<div style=" text-decoration: underline">
Text decoration property used here
</div>
</br>
<div style="text-transform: lowercase">
Text transform property used here
</div>
</br>
<div style="text-indent: 80px">
Text indent property used here
</div>
</br>
<div style=" letter-spacing: 4px">
Text line spacing property used here
</div>
</br>
<div style="line-height: 40px">
Text line height property used here
</div>
</br>
<div style="text-shadow: 3px 1px blue;">
Text shadow property used here
</div>
</br>
<div style="word-spacing: 15px;">
Text word spacing property used here
</div>
</body>
</html>
Background properties: The CSS background properties are used to design the background and define the background effects for elements.
Property Description Syntax Background-color Specifies the background color of an element. background-color:
<!DOCTYPE html>
<html>
<head>
<title>Background Properties</title>
<style>
.a {
background-image:
url(
"https://media.geeksforgeeks.org/wp-content/cdn-uploads/20190417124305/250.png");
}
.b {
background-image:
url(
"https://media.geeksforgeeks.org/wp-content/cdn-uploads/20190417124305/250.png");
background-repeat: no-repeat;
}
.c {
background-image:
url(
"https://media.geeksforgeeks.org/wp-content/cdn-uploads/20190417124305/250.png");
background-repeat: no-repeat;
background-position: center;
}
.d {
background-image:
url(
'https://media.geeksforgeeks.org/wp-content/cdn-uploads/gfg_200X200.png');
background-repeat: no-repeat;
background-origin: initial;
}
.e {
background-image:
url(
"https://media.geeksforgeeks.org/wp-content/uploads/geeks-25.png");
background-position: center;
background-repeat: no-repeat;
background-attachment: fixed;
}
</style>
</head>
<body>
<div style="background-color: blue">Background color property</div>
</br>
<div class="a" style="height: 200px; width: 100%">
<h3> Background Image property</h3>
</div>
<br><br>
<div class="b" style="height: 200px; width: 100%">
<h3> Background repeat property: no-repeat</h3>
</div>
<br><br>
<div class="c" style="height: 200px; width: 100%">
<h3> Background position property</h3>
</div>
<br><br>
<div class="d" style="height: 200px; width: 100%">
<h3>Background origin property: The background-origin
is a property used to set the origin of the
image in the background.
</h3>
</div>
<br><br>
<div class="e" style="height: 400px;
width: 100%;
text-align:center;">
<h3> Background-attachment property</h3>
<p>The property background-attachment property in CSS is used
to specify the kind of attachment of the background image
It can be set to scroll or remain fixed.
</p>
</div>
<br>
</body>
</html>
Box Properties: The CSS box model is essentially a box that wraps around every HTML element consisting of the border, padding, margin, and content. The CSS properties used to attain the box model are:
Property Description Syntax Margin Used to set the margin margin: value; Padding Specifies the space between the border and the content of the selector. padding: value; Border Sets the element's border width and set the style, and color of an element's border. border: value; Width Used to set an element's width. width: value; Height Used to set an element's height height: value; CSS
<!DOCTYPE html>
<head>
<title>CSS Box Model</title>
<style>
.main {
font-size: 20px;
font-weight: bold;
Text-align: left;
}
.gfg {
margin-left: 60px;
border: 50px solid #009900;
width: 300px;
height: 200px;
text-align: center;
padding: 50px;
}
.gfg1 {
font-size: 42px;
font-weight: bold;
color: #009900;
margin-top: 60px;
background-color: #c5c5db;
}
.gfg2 {
font-size: 18px;
font-weight: bold;
background-color: #c5c5db;
}
</style>
</head>
<body>
<div class="main">CSS Box-Model Property</div>
<div class="gfg">
<div class="gfg1">GeeksforGeeks</div>
<div class="gfg2">
A computer science portal for geeks
</div>
</div>
</body>
</html>
Shadow properties: These shadow properties are used to add shadow to text or boxes or frames of elements.
Property Description Syntax Text shadow Adds shadow to text. text-shadow:
<!DOCTYPE html>
<html>
<head>
<title>CSS box-shadow Property</title>
<style>
.gfg1 {
border: 1px solid;
padding: 10px;
/* box-shadow: h-offset v-offset blur */
box-shadow: 5px 10px 10px;
}
/* text-shadow: h-shadow v-shadow
blur-radius color */
h2 {
text-shadow: 5px 5px 8px #00FF00;
}
</style>
</head>
<body>
<div class="gfg1">
<h1>Welcome to GeeksforGeeks!</h1>
</div>
<br><br>
<h2>GeekforGeeks</h2>
</body>
</html>
Gradient: The CSS gradient property is used to create transition between two or more specified colors
Gradient Description Syntax Linear Gradient Creates smooth color transitions. background-image:
<!DOCTYPE html>
<html>
<head>
<title>CSS Gradients</title>
<style>
#main1 {
height: 200px;
background-color: white;
background-image: linear-gradient(white, green);
}
#main2 {
height: 350px;
width: 700px;
background-color: white;
background-image: radial-gradient(#090,
#fff, #2a4f32);
}
.gfg {
text-align: center;
font-size: 40px;
font-weight: bold;
padding-top: 80px;
}
.geeks {
font-size: 17px;
text-align: center;
}
</style>
</head>
<body>
<!-- Linear gradient -->
<div id="main1">
<div class="gfg">GeeksforGeeks</div>
<div class="geeks">
Linear Gradient
</div>
</div>
<br><br>
<!-- Radial Gradient -->
<div id="main2">
<div class="gfg">GeeksforGeeks</div>
<div class="geeks">
Radial Gradient
</div>
</body>
</html>
Border Properties: The CSS border properties allow you to specify how the border of the box representing an element should look.
Property Description Syntax Border Color Specifies the color of the border of the box. Works only when the border-style property is defined. border-color:
<!DOCTYPE html>
<html>
<head>
<title> Border Properties</title>
<style>
#gfg1 {
border: 2px solid blue;
width: 60%;
}
#gfg2 {
border: thick dashed green;
width: 60%;
}
</style>
</head>
<body>
<div id="gfg1">
Demonstration of solid thick border of color blue
</div><br><br>
<div id="gfg2">
Demonstration of dotted 2px width border of color green
</div>
</body>
</html>
Classification Properties: The CSS classification properties allow you to specify how and where an element is displayed.
Property Description Syntax Display Defines how elements are displayed in the web page. display:
<!DOCTYPE html>
<html>
<head>
<title>Classification properties</title>
<style>
#geeks1 {
height: 50px;
width: 100px;
background: teal;
display: block;
}
#geeks2 {
height: 50px;
width: 100px;
background: cyan;
display: block;
}
#geeks3 {
height: 50px;
width: 100px;
background: green;
display: block;
}
.pos {
position: relative;
left: 30px;
border: 3px solid #73AD21;
}
.clr {
width: 100px;
height: 100px;
background-color: green;
color: white;
font-weight: bold;
font-style: itallic;
font-size: 25px;
text-align: center;
float: left;
padding: 15px;
}
p.GFG {
clear: left;
}
h1,
h2 {
color: green;
text-align: center;
}
.wait {
cursor: wait;
}
</style>
</head>
<body>
<p>display Property: block </p>
<div>
<div id="geeks1">Block 1 </div>
<div id="geeks2">Block 2</div>
<div id="geeks3">Block 3</div>
</div>
<br>
<p>Float Property:left</p>
<div style="font-size:20px; color:#006400; float:right;">
Content floats right
</div>
<br>
<p>Position Property:relative</p>
<div class="pos">
This div element has position: relative;
</div><br>
<p>Clear property: left</p>
<div class="clr">
<pre>GFG</pre>
</div>
<p>
GeeksforGeeks:
A computer science portal for geeks
</p>
<p class="GFG">GeeksforGeeks</p>
<br>
<p>Visibility property: visible/ hidden</p>
<div style="visibility: visible;">Content here is visible</div>
<div style="visibility: hidden">Content here is hidden</div>
<br>
<p>Cursor property: wait</p>
<p class="wait">
Mouse over the words to change the mouse cursor.
</p>
</body>
</html>
CSS Functions: CSS has a range of inbuilt functions. These are used as a value for various CSS properties. Some of the CSS functions can be nested as well. It ranges from simple color functions to mathematical, shape, color, transform, gradient, and animations functions. Some of the key functions are:
Function Description Syntax attr() Retrieves the value of an attribute of the selected elements attr( attr_name ); calc() Takes a single mathematical expression as its parameter and performs operations calc( Expression ); max() Returns the largest number of the given set of comma separated numbers. max(value 1, value2, value3...) url() Takes a string URL as a parameter and is used to load images, fonts and content url( <string> <url-modifier>* ) var() Inserts the value of a custom property. Its name must start with two dashes. var( custom_property, value ) CSS
<!DOCTYPE html>
<html>
<head>
<title>CSS functions</title>
<style>
a:before {
content: attr(href) " =>";
}
a {
text-decoration: none;
}
body {
text-align: center;
}
.geeks {
position: absolute;
left: 50px;
width: calc(100% - 20%);
height: calc(100px - 20px);
background-color: green;
text-align: center;
}
.url {
background-image: url(
"https://media.geeksforgeeks.org/wp-content/cdn-uploads/20190710102234/download3.png");
text-align: center;
}
.gfg1 {
background-color: var(--main-bg-color);
padding: 10px;
}
:root {
--main-bg-color: Green;
}
</style>
</head>
<body>
<p>attribute function</p>
<a href="https://www.geeksforgeeks.org">GeeksforGeeks</a><br><br>
<p>Calc function</p>
<div class="geeks">
<h3>The calc() Function</h3>
</div><br><br>
<p>URL function</p>
<div class="url" style="height:200px; width:100%">
<h3>CSS url() function</h3>
</div><br>
<p> var function</p>
<div class="gfg1">demonstration of var function</div><br>
</body>
</html>
Media Queries: The CSS Media Query is used to make the web page more responsive according to the different screens or media types. Media queries include a block of CSS only if a certain expression is true.
Syntax:
@media not | only mediatype and (expression) {
// Code contentMedia Type Description All It is used for all media devices. Print It is used when printer is in use. Screen It is used for computer screens, smartphones etc. Speech It is used for screen readers that read the screen aloud.
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