w3 Tutorial, Web Tutorial
| Selector | Example | Example description | CSS |
|---|---|---|---|
| .class | .intro | Selects all elements with class="intro" | 1 |
| #id | #firstname | Selects the element with id="firstname" | 1 |
| * | * | Selects all elements | 2 |
| element | p | Selects all <p> elements | 1 |
| element,element | div,p | Selects all <div> elements and all <p> elements | 1 |
| element element | div p | Selects all <p> elements inside <div> elements | 1 |
| element>element | div>p | Selects all <p> elements where the parent is a <div> element | 2 |
| element+element | div+p | Selects all <p> elements that are placed immediately after <div> elements | 2 |
| [attribute] | [target] | Selects all elements with a target attribute | 2 |
| [attribute=value] | [target=_blank] | Selects all elements with target="_blank" | 2 |
| [attribute~=value] | [title~=flower] | Selects all elements with a title attribute containing the word "flower" | 2 |
| [attribute|=language] | [lang|=en] | Selects all elements with a lang attribute value starting with "en" | 2 |
| :link | a:link | Selects all unvisited links | 1 |
| :visited | a:visited | Selects all visited links | 1 |
| :active | a:active | Selects the active link | 1 |
| :hover | a:hover | Selects links on mouse over | 1 |
| :focus | input:focus | Selects the input element which has focus | 2 |
| :first-letter | p:first-letter | Selects the first letter of every <p> element | 1 |
| :first-line | p:first-line | Selects the first line of every <p> element | 1 |
| :first-child | p:first-child | Selects every <p> elements that is the first child of its parent | 2 |
| :before | p:before | Insert content before every <p> element | 2 |
| :after | p:after | Insert content after every <p> element | 2 |
| :lang(language) | p:lang(it) | Selects every <p> element with a lang attribute value starting with "it" | 2 |
