[CSS Selector] E#idName
Using #id-name, you can apply styles to the element with the specified id.
Sample Code
style.css
/* target by id */
#hoge { color: red;}
/* target by tag + id */
p#hoge1 { color: blue;}
/* practical use: major page sections */
#header { background-color: #2c3e50; color: white; padding: 16px;}
#main { max-width: 1200px; margin: 0 auto; padding: 24px;}
#footer { background-color: #34495e; color: #ecf0f1; padding: 24px; text-align: center;}
/* id is also used as an anchor for in-page links */
#section-top { scroll-margin-top: 60px;} /* offset for sticky headers */
Browser Display Result
#hoge { color: red;} /* Applies to the element with id 'hoge'. */
p#hoge1 { color: blue;} /* Applies to the p element with id 'hoge1'. */
<div id="hoge">This is a div element with id 'hoge'.</div> <div>This is a div element.</div> <p id="hoge1">This is a p element with id 'hoge1'.</p> <p>This is a p element.</p>
Browser Compatibility
Desktop
8 ○
7 ○
6 ○
2 and earlier ×Mobile
Android Browser
4.4+ ○
3 and earlier ×Same support as desktop
Same support as desktop
※ Version data is based on MDN.
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