What to do if hover doesn't work-CSS Tutorial-php.cn

Home

Web Front-end

CSS Tutorial

What to do if hover doesn't work

藏色散人

Mar 03, 2021 am 10:40 AM

hover

Solution for hover not working: 1. Check and delete the space before ":hover"; 2. Check and modify the correct class name; 3. Check whether ":hover" is placed in ":hover" link" and ":visited", just modify the location.

What to do if hover doesn't work

The operating environment of this tutorial: windows7 system, HTML5&&CSS3 version, DELL G3 computer.

There are several reasons why hover in css does not work:

1. Add a space before setting:hover:

For example,

<style type="text/css">
.one {
margin: 0 auto;
width: 400px;
height: 300px;
background: #ced05d;
}
.two {
margin: 0 auto;
width: 100px;
height: 100px;
background: #5a5aea;
}
.three {
margin: 0 auto;
width: 200px;
height: 100px;
background: #4b9c49;
}
.four {
margin: 0 auto;
width: 300px;
height: 100px;
background: #7b4141;
}
.one :hover {
background: #da56d0;
}
</style>
<body>
<h1 id="测试">测试</h1>
<div class="one">
<div class="two">
</div>
<div class="three">
</div>
<div class="four">
</div>
</div>
</body>

you find that the mouse When the class is one, the background remains unchanged, but the background color of other divs inside one changes.

Explanation: Adding a space before hover will not have the effect of :hover, but the descendant elements will have: hover effect.

[Recommended learning: css video tutorial]

2. When the mouse passes over, let other elements change styles:

You will find at this time , only descendant elements and sibling elements (sibling elements immediately after the element) have an effect, other :hover will be invalid

3. The class name is written wrong;

4.: hover is placed before :link and :visited;

In the CSS definition, a:hover must be placed after a:link and a:visited to be valid.

In the CSS definition, a:active must be placed after a:hover to be valid.

The above is the detailed content of What to do if hover doesn't work. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Two Images and an API: Everything We Need for Recoloring ProductsApr 15, 2025 am 11:27 AM

I recently found a solution to dynamically update the color of any product image. So with just one of a product, we can colorize it in different ways to show

Weekly Platform News: Impact of Third-Party Code, Passive Mixed Content, Countries with the Slowest ConnectionsApr 15, 2025 am 11:19 AM

In this week's roundup, Lighthouse sheds light on third-party scripts, insecure resources will get blocked on secure sites, and many country connection speeds

Options for Hosting Your Own Non-JavaScript-Based AnalyticsApr 15, 2025 am 11:09 AM

There are loads of analytics platforms to help you track visitor and usage data on your sites. Perhaps most notably Google Analytics, which is widely used

It's All In the Head: Managing the Document Head of a React Powered Site With React HelmetApr 15, 2025 am 11:01 AM

The document head might not be the most glamorous part of a website, but what goes into it is arguably just as important to the success of your website as its

What is super() in JavaScript?Apr 15, 2025 am 10:59 AM

What's happening when you see some JavaScript that calls super()?.In a child class, you use super() to call its parent’s constructor and super. to access its

Comparing the Different Types of Native JavaScript PopupsApr 15, 2025 am 10:48 AM

JavaScript has a variety of built-in popup APIs that display special UI for user interaction. Famously:

Why Are Accessible Websites so Hard to Build?Apr 15, 2025 am 10:45 AM

I was chatting with some front-end folks the other day about why so many companies struggle at making accessible websites. Why are accessible websites so hard