 
      | 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 equal to ""en"" or 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 | 
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