How to set background gray and transparency in css3-CSS Tutorial-php.cn

Home

Web Front-end

CSS Tutorial

How to set background gray and transparency in css3

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Dec 10, 2021 pm 02:15 PM

css

Method: 1. Use the background attribute to set the background color to gray, just add the "background:#c0c0c0;" style to the element; 2. Use the opacity attribute to set the transparency of the element, just add "opacity" to the element :Transparency value;" style is enough.

How to set background gray and transparency in css3

The operating environment of this tutorial: Windows 10 system, CSS3&&HTML5 version, Dell G3 computer.

How to set the background to gray and transparent in css3

In css, you can use the background attribute to set the background to gray, just add " background:#c0c0c0" style is enough.

In CSS, you can use the opacity attribute to set the transparency of an element. The opacity attribute sets the opacity level of an element. Specifies opacity. From 0.0 (fully transparent) to 1.0 (fully opaque).

The example is as follows:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <style>
      .div1{
        width:200px;
        height:200px;
        background:#c0c0c0 ;
      }
      .div2{
        width:200px;
        height:200px;
        background:#c0c0c0;
        opacity:0.5;
      }
    </style>
    设置灰色：
<div class="div1"></div>
设置灰色且透明度：
<div class="div2"></div>
</body>
</html>

Output result:

How to set background gray and transparency in css3

(Learning video sharing: css video tutorial)

The above is the detailed content of How to set background gray and transparency in css3. 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

This Isn't Supposed to Happen: Troubleshooting the ImpossibleMay 15, 2025 am 10:32 AM

What it looks like to troubleshoot one of those impossible issues that turns out to be something totally else you never thought of.

@keyframes vs CSS Transitions: What is the difference?May 14, 2025 am 12:01 AM

@keyframesandCSSTransitionsdifferincomplexity:@keyframesallowsfordetailedanimationsequences,whileCSSTransitionshandlesimplestatechanges.UseCSSTransitionsforhovereffectslikebuttoncolorchanges,and@keyframesforintricateanimationslikerotatingspinners.

Using Pages CMS for Static Site Content ManagementMay 13, 2025 am 09:24 AM

I know, I know: there are a ton of content management system options available, and while I've tested several, none have really been the one, y'know? Weird pricing models, difficult customization, some even end up becoming a whole &

The Ultimate Guide to Linking CSS Files in HTMLMay 13, 2025 am 12:02 AM

Linking CSS files to HTML can be achieved by using elements in part of HTML. 1) Use tags to link local CSS files. 2) Multiple CSS files can be implemented by adding multiple tags. 3) External CSS files use absolute URL links, such as. 4) Ensure the correct use of file paths and CSS file loading order, and optimize performance can use CSS preprocessor to merge files.

CSS Flexbox vs Grid: a comprehensive reviewMay 12, 2025 am 12:01 AM

Choosing Flexbox or Grid depends on the layout requirements: 1) Flexbox is suitable for one-dimensional layouts, such as navigation bar; 2) Grid is suitable for two-dimensional layouts, such as magazine layouts. The two can be used in the project to improve the layout effect.

How to Include CSS Files: Methods and Best PracticesMay 11, 2025 am 12:02 AM

The best way to include CSS files is to use tags to introduce external CSS files in the HTML part. 1. Use tags to introduce external CSS files, such as. 2. For small adjustments, inline CSS can be used, but should be used with caution. 3. Large projects can use CSS preprocessors such as Sass or Less to import other CSS files through @import. 4. For performance, CSS files should be merged and CDN should be used, and compressed using tools such as CSSNano.

Flexbox vs Grid: should I learn them both?May 10, 2025 am 12:01 AM

Yes,youshouldlearnbothFlexboxandGrid.1)Flexboxisidealforone-dimensional,flexiblelayoutslikenavigationmenus.2)Gridexcelsintwo-dimensional,complexdesignssuchasmagazinelayouts.3)Combiningbothenhanceslayoutflexibilityandresponsiveness,allowingforstructur

Orbital Mechanics (or How I Optimized a CSS Keyframes Animation)May 09, 2025 am 09:57 AM

What does it look like to refactor your own code? John Rhea picks apart an old CSS animation he wrote and walks through the thought process of optimizing it.

See all articles