Οι επιλογείς CSS ορίζουν τα στοιχεία στα οποία ισχύει ένα σύνολο κανόνων CSS.
CSS Pseudo Selectors
Table of Contents
All CSS Pseudo Classes
Note: Used with single colon [:]
| Selector | Example | Example description |
|---|---|---|
| :active | a:active |
Selects the active link |
| :checked | input:checked |
Selects every checked <input> element |
| :disabled | input:disabled |
Selects every disabled <input> element |
| :empty | p:empty |
Selects every <p> element that has no children |
| :enabled | input:enabled |
Selects every enabled <input> element |
| :first-child | p:first-child |
Selects every <p> elements that is the first child of its parent |
| :first-of-type | p:first-of-type |
Selects every <p> element that is the first <p> element of its parent |
| :focus | input:focus |
Selects the <input> element that has focus |
| :hover | a:hover |
Selects links on mouse over |
| :in-range | input:in-range |
Selects <input> elements with a value within a specified range |
| :invalid | input:invalid |
Selects all <input> elements with an invalid value |
| :lang(language) | p:lang(it) |
Selects every <p> element with a lang attribute value starting with "it" |
| :last-child | p:last-child |
Selects every <p> elements that is the last child of its parent |
| :last-of-type | p:last-of-type |
Selects every <p> element that is the last <p> element of its parent |
| :link | a:link |
Selects all unvisited links |
| :not(selector) | :not(p) |
Selects every element that is not a <p> element |
| :nth-child(n) | p:nth-child(2) |
Selects every <p> element that is the second child of its parent |
| :nth-last-child(n) | p:nth-last-child(2) |
Selects every <p> element that is the second child of its parent, counting from the last child |
| :nth-last-of-type(n) | p:nth-last-of-type(2) |
Selects every <p> element that is the second <p> element of its parent, counting from the last child |
| :nth-of-type(n) | p:nth-of-type(2) |
Selects every <p> element that is the second <p> element of its parent |
| :only-of-type | p:only-of-type |
Selects every <p> element that is the only <p> element of its parent |
| :only-child | p:only-child |
Selects every <p> element that is the only child of its parent |
| :optional | input:optional |
Selects <input> elements with no "required" attribute |
| :out-of-range | input:out-of-range |
Selects <input> elements with a value outside a specified range |
| :read-only | input:read-only |
Selects <input> elements with a "readonly" attribute specified |
| :read-write | input:read-write |
Selects <input> elements with no "readonly" attribute |
| :required | input:required |
Selects <input> elements with a "required" attribute specified |
| :root | root |
Selects the document’s root element |
| :target | #news:target |
Selects the current active #news element (clicked on a URL containing that anchor name) |
| :valid | input:valid |
Selects all <input> elements with a valid value |
| :visited | a:visited |
Selects all visited links |
Alphabetical index
Note:
= This is an experimental API that should not be used in production code.
Pseudo-classes defined by a set of CSS specifications include the following:
A
B
C
D
E
F
H
I
L
N
O
P
R
S
T
U
V
W
All CSS Pseudo Elements
Note: Used with double colon [::]
| Selector | Example | Example description |
|---|---|---|
| ::after | p::after |
Insert content after every <p> element |
| ::before | p::before |
Insert content before every <p> element |
| ::first-letter | p::first-letter |
Selects the first letter of every <p> element |
| ::first-line | p::first-line |
Selects the first line of every <p> element |
| ::selection | p::selection |
Selects the portion of an element that is selected by a user |
Alphabetical index
Note:
= This is an experimental API that should not be used in production code.
Pseudo-elements defined by a set of CSS specifications include the following:
A
B
C
F
G
M
P
S
T
CSS Selectors Reference
| Selector | Example | Example description |
|---|---|---|
| .class | .intro |
Selects all elements with class=”intro” |
| .class1.class2 | .name1.name2 |
Selects all elements with both name1 and name2 set within its class attribute |
| .class1 .class2 | .name1 .name2 |
Selects all elements with name2 that is a descendant of an element with name1 |
| #id | #firstname |
Selects the element with id="firstname" |
| * | * |
Selects all elements |
| element | p |
Selects all <p> elements |
| element.class | p.intro |
Selects all <p> elements with class="intro" |
| element,element | div, p |
Selects all <div> elements and all <p> elements |
| element element | div p |
Selects all <p> elements inside <div> elements |
| element>element | div > p |
Selects all <p> elements where the parent is a <div> element |
| element+element | div + p |
Selects the first <p> element that is placed immediately after <div> elements |
| element1~element2 | p ~ ul |
Selects every <ul> element that is preceded by a <p> element |
| [attribute] | [target] |
Selects all elements with a target attribute |
| [attribute=value] | [target=_blank] |
Selects all elements with target="_blank" |
| [attribute~=value] | [title~=flower] |
Selects all elements with a title attribute containing the word "flower" |
| [attribute|=value] | [lang|=en] |
Selects all elements with a lang attribute value starting with "en" |
| [attribute^=value] | a[href^="https"] |
Selects every <a> element whose href attribute value begins with "https" |
| [attribute$=value] | a[href$=".pdf"] |
Selects every <a> element whose href attribute value ends with ".pdf" |
| [attribute*=value] | a[href*="w3schools"] |
Selects every <a> element whose href attribute value contains the substring "w3schools" |
| :active | a:active |
Selects the active link |
| ::after | p::after |
Insert something after the content of each <p> element |
| ::before | p::before |
Insert something before the content of each <p> element |
| :checked | input:checked |
Selects every checked <input> element |
| :default | input:default |
Selects the default <input> element |
| :disabled | input:disabled |
Selects every disabled <input> element |
| :empty | p:empty |
Selects every <p> element that has no children (including text nodes) |
| :enabled | input:enabled |
Selects every enabled <input> element |
| :first-child | p:first-child |
Selects every <p> element that is the first child of its parent |
| ::first-letter | p::first-letter |
Selects the first letter of every <p> element |
| ::first-line | p::first-line |
Selects the first line of every <p> element |
| :first-of-type | p:first-of-type |
Selects every <p> element that is the first <p> element of its parent |
| :focus | input:focus |
Selects the input element which has focus |
| :fullscreen | :fullscreen |
Selects the element that is in full-screen mode |
| :hover | a:hover |
Selects links on mouse over |
| :in-range | input:in-range |
Selects input elements with a value within a specified range |
| :indeterminate | input:indeterminate |
Selects input elements that are in an indeterminate state |
| :invalid | input:invalid |
Selects all input elements with an invalid value |
| :lang(language) | p:lang(it) |
Selects every <p> element with a lang attribute equal to "it" (Italian) |
| :last-child | p:last-child |
Selects every <p> element that is the last child of its parent |
| :last-of-type | p:last-of-type |
Selects every <p> element that is the last <p> element of its parent |
| :link | a:link |
Selects all unvisited links |
| ::marker | ::marker | Selects the markers of list items |
| :not(selector) | :not(p) |
Selects every element that is not a <p> element |
| :nth-child(n) | p:nth-child(2) |
Selects every <p> element that is the second child of its parent |
| :nth-last-child(n) | p:nth-last-child(2) |
Selects every <p> element that is the second child of its parent, counting from the last child |
| :nth-last-of-type(n) | p:nth-last-of-type(2) |
Selects every <p> element that is the second <p> element of its parent, counting from the last child |
| :nth-of-type(n) | p:nth-of-type(2) |
Selects every <p> element that is the second <p> element of its parent |
| :only-of-type | p:only-of-type |
Selects every <p> element that is the only <p> element of its parent |
| :only-child | p:only-child |
Selects every <p> element that is the only child of its parent |
| :optional | input:optional |
Selects input elements with no “required” attribute |
| :out-of-range | input:out-of-range |
Selects input elements with a value outside a specified range |
| ::placeholder | input::placeholder |
Selects input elements with the “placeholder” attribute specified |
| :read-only | input:read-only |
Selects input elements with the “readonly” attribute specified |
| :read-write | input:read-write |
Selects input elements with the “readonly” attribute NOT specified |
| :required | input:required |
Selects input elements with the “required” attribute specified |
| :root | :root |
Selects the document’s root element |
| ::selection | ::selection |
Selects the portion of an element that is selected by a user |
| :target | #news:target |
Selects the current active #news element (clicked on a URL containing that anchor name) |
| :valid | input:valid |
Selects all input elements with a valid value |
| :visited | a:visited |
Selects all visited links |
CSS Selectors Cheat Sheet for Developers
| Selector Name | Syntax | Description | Example |
|---|---|---|---|
| Universal Selector | * |
Selects all the elements | * {color: pink; font-size: 20px;} |
| Type Selector | element {properties} |
Selects elements based on element type | p {color: pink; font-size: 20px;} |
| Id Selector | #id {properties} |
Selects an element with a specified id | #adbox {width: 80px; margin: 5px;} |
| Class Selector | .class {properties} |
Selects elements of the specified CSS class | .dark {color: black;} |
| Attribute Selectors | |||
element[attribute] {properties} |
Selects elements with the specified attribute | input[disabled] {background-color: #fff;} |
|
element[attribute="value"] |
Selects elements with the specified attribute equaling a value | input[type="text"] {color: black;} |
|
element[attribute~="value"] |
Selects elements with the specified attribute the value of which contains a specific word. | h1[title~="Codota"] {color: pink; font-size: 20px;} |
|
element[attribute|="value"] |
Selects elements with the specified attribute and attribute value with the attribute beginning with specified value (or specified value immediately followed by “-“) | a[hreflang|="en"] {color: blue;} |
|
element[attribute^="value"] |
Selects elements with the specified attribute with the attribute value starting with specified value | h2[title^="Codota"] {color: black; font-size: 20px;} |
|
element[attribute$="value"] |
Selects elements with the specified attribute with the attribute value ending with specified value | h3[title$="Right Now!"] {color: red; font-size: 30px;} |
|
element[attribute*="value"] |
Selects elements with the specified attribute where the attribute value contains a specified value | h4[title*="new"] {color: red; font-size: 20px;} |
|
| Descendant Combinator | element1 element2 {properties} |
Selects all specified child descendant elements (element2) under the parent element (element1). | div p {color:pink;} |
| Child Combinator | element1 > element2 {properties} |
Selects all specified immediate child elements (element2) under the parent element (element1). | div > p {color:pink;} |
| Pseudo Classes | |||
element:link {properties} |
Selects unvisited link elements | a:link {color:blue;} |
|
element:visited {properties} |
Selects visited link elements | a:visited {color:red;} |
|
element:active {properties} |
Selects active link elements | a:active {color:green;} |
|
element:hover {properties} |
Selects mouseover hover elements | a:hover {color:purple;} |
|
element:focus {properties} |
Selects in-focus elements | a:focus {color:pink;} |
|
Sources
- CSS Pseudo-classes | w3schools
- Pseudo-classes | MDN Web Docs moz://a
- CSS Pseudo-elements | w3schools
- Pseudo-elements | MDN Web Docs moz://a
- CSS selectors | MDN Web Docs moz://a
- CSS Selector Reference | w3schools
- CSS Selectors Cheat Sheet for Developers | Codota Blog
- CSS3/Selectors | w3.org
- CSS selectors cheatsheet & details | Design & Code Repository | Medium
- CSS selectors cheatsheet | by nana jeon, Feb 2019 | pdf
- CSS Selector Cheat Sheet – Light | By Web Dev Simplified | pdf || courses.webdevsimplified.com

