Detailed explanation of CSS3 RGBA color mode usage example code
This article mainly takes the design of a form with a shadow border as an example to introduce the use of CSS3 RGBA color mode. Interested friends can refer to it
RGBA color mode is RGB color The expansion of the mode adds opacity parameters based on the three primary colors of red, blue, and green. The syntax is as follows:
rgba（r,g,b,
where r,g,b represents the three primary colors of red, blue and green proportion. Its value can be integer or percentage. The value range of positive integer value is 0~255, and the value range of percentage value is 0.0%~100.0%. Values outside the range will be cut off to the nearest Value limit. Note that not all browsers support using percentage values. The fourth parameter
Example: Design a form with a shadow border
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>RGBA Color</title>
<style type="text/css">
input, textarea {/*统一输入域样式*/
padding: 4px;
border: solid 1px #E5E5E5;
outline: 0;
font: normal 13px/100% Verdana, Tahoma, sans-serif;
width: 200px;
background: #FFFFFF;
box-shadow: rgba(0, 0, 0, 0.1) 0px 0px 8px;/*设计边框阴影效果*/
-moz-box-shadow: rgba(0, 0, 0, 0.1) 0px 0px 8px;/*兼容Mozilla类型的浏览器，如FF*/
-webkit-box-shadow: rgba(0, 0, 0, 0.1) 0px 0px 8px;/*兼容Webkit引擎，如Chrome和Safari*/
}
textarea {/*定义文本区域样式*/
width: 400px;
max-width: 400px;
height: 150px;
line-height: 150%;
background:url(images/form-shadow.png) no-repeat bottom right;
}
input:hover, textarea:hover, input:focus, textarea:focus { border-color: #C9C9C9; }/*设计鼠标的动态效果*/
label {/*定义标签样式*/
margin-left: 10px;
color: #999999;
display:block;/*以块状显示，实现分行显示*/
}
.submit input {/*设计提交按钮的样式*/
width:auto;
padding: 9px 15px;
background: #617798;
border: 0;
font-size: 14px;
color: #FFFFFF;
}
</style>
</head>
<body>
<form>
<p class="name">
<label for="name">姓名</label>
<input type="text" name="name" id="name" />
</p>
<p class="email">
<label for="email">邮箱</label>
<input type="text" name="email" id="email" />
</p>
<p class="web">
<label for="web">个人网址</label>
<input type="text" name="web" id="web" />
</p>
<p class="text">
<label for="text">留言</label>
<textarea name="text" id="text"></textarea>
</p>
<p class="submit">
<input type="submit" value="提交" />
</p>
</form>
</body>
</html>Demonstration effect:
The above is the entire content of this article, I hope it will be helpful to everyone's study.
The above is the detailed content of Detailed explanation of CSS3 RGBA color mode usage example code. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1382
52
How to achieve wave effect with pure CSS3? (code example)
Jun 28, 2022 pm 01:39 PM
How to achieve wave effect with pure CSS3? This article will introduce to you how to use SVG and CSS animation to create wave effects. I hope it will be helpful to you!
What is the rgb color mode?
Feb 13, 2020 pm 02:08 PM
RGB is the color mode of light. R represents red, G represents green, and B represents blue. The three colors can be superimposed to form other colors, so this mode is also called additive color mode.
Use CSS skillfully to realize various strange-shaped buttons (with code)
Jul 19, 2022 am 11:28 AM
This article will show you how to use CSS to easily realize various weird-shaped buttons that appear frequently. I hope it will be helpful to you!
How to hide elements in css without taking up space
Jun 01, 2022 pm 07:15 PM
Two methods: 1. Using the display attribute, just add the "display:none;" style to the element. 2. Use the position and top attributes to set the absolute positioning of the element to hide the element. Just add the "position:absolute;top:-9999px;" style to the element.
How to implement lace borders in css3
Sep 16, 2022 pm 07:11 PM
In CSS, you can use the border-image attribute to achieve a lace border. The border-image attribute can use images to create borders, that is, add a background image to the border. You only need to specify the background image as a lace style; the syntax "border-image: url (image path) offsets the image border width inward. Whether outset is repeated;".
It turns out that text carousel and image carousel can also be realized using pure CSS!
Jun 10, 2022 pm 01:00 PM
How to create text carousel and image carousel? The first thing everyone thinks of is whether to use js. In fact, text carousel and image carousel can also be realized using pure CSS. Let’s take a look at the implementation method. I hope it will be helpful to everyone!
How to enlarge the image by clicking the mouse in css3
Apr 25, 2022 pm 04:52 PM
Implementation method: 1. Use the ":active" selector to select the state of the mouse click on the picture; 2. Use the transform attribute and scale() function to achieve the picture magnification effect, the syntax "img:active {transform: scale(x-axis magnification, y Axis magnification);}".
How to set animation rotation speed in css3
Apr 28, 2022 pm 04:32 PM
In CSS3, you can use the "animation-timing-function" attribute to set the animation rotation speed. This attribute is used to specify how the animation will complete a cycle and set the speed curve of the animation. The syntax is "element {animation-timing-function: speed attribute value;}".
