About CSS image stitching technology
This article mainly introduces the CSS image stitching technology, which has certain reference value. Now I share it with everyone. Friends in need can refer to it
Image stitching is a collection of single images .
Web pages with many images may take a long time to load and generate multiple server requests.
Using image stitching will reduce the number of server requests and save bandwidth.
Image stitching--create a navigation list
<!DOCTYPE html>
<html>
<head>
<title>自学教程(如约智惠.com)</title>
<meta charset="utf-8">
<style>
#navlist {position:relative;}
#navlist li{
margin:0px;
padding:0px;
list-style:none;
position:absolute;
top:0px;
}
#navlist li, #navlist a{
height:44px;
display:block;
}
#home {
left:0px;
width:46px;
background:url('./images/img_navsprites.gif')0 0;
}
#prev {
left:63px;
width:43px;
background:url('./images/img_navsprites.gif')-47px 0;
}
#next {
left:129px;
width:43px;
background:url('./images/img_navsprites.gif')-91px 0;
}
</style>
</head>
<body >
<ul id="navlist">
<li id="home"><a href="/"></a></li>
<li id="prev"><a href="/css/"></a></li>
<li id="next"><a href="/css/"></a></li>
</ul>
</body>
</html>Example analysis:
#navlist{position:relative;} - The position is set to relative positioning, so that the absolute positioning inside
#navlist li{margin:0;padding:0; list-style:none;position:absolute;top:0;} - margin and padding are set to 0, the list style is deleted, and all list items are absolutely positioned
navlist li, #navlist a{height:44px;display:block;} - The height of all images is 44px
Now let’s start positioning and styling each specific part:
#home{left:0px;width:46px;} - Positioned to the far left, and the width of the image is 46px
#home{background:url( img_navsprites.gif) 0 0;} - defines the background image and its position (left 0px, top 0px)
#prev{left:63px;width:43px;} - right Positioned 63px (#home width 46px with some extra space between items), width 43px.
#prev{background:url('img_navsprites.gif') -47px 0;} - Define the background image 47px to the right (#home width 46px 1px of the divider)
#next{left:129px;width:43px;}- The right position is 129px (#prev 63px #prev width is 43px and the remaining space), the width is 43px.
#next{background:url('img_navsprites.gif') no-repeat -91px 0;} - Define 91px on the right side of the background image (#home 46px 1px dividing line #prev width 43px 1px dividing line)
Image stitching--hover effect
<!DOCTYPE html>
<html>
<head>
<title>自学教程(如约智惠.com)</title>
<meta charset="utf-8">
<style>
#navlist {position:relative;}
#navlist li{
margin:0px;
padding:0px;
list-style:none;
position:absolute;
top:0px;
}
#navlist li, #navlist a{
height:44px;
display:block;
}
#home {
left:0px;
width:46px;
background:url('./images/img_navsprites_hover.gif')0 0;
}
#home a:hover {
background:url('./images/img_navsprites_hover.gif')0 -45px;
}
#prev {
left:63px;
width:43px;
background:url('./images/img_navsprites_hover.gif')-47px 0;
}
#prev a:hover {
background:url('./images/img_navsprites_hover.gif')-47px -45px;
}
#next {
left:129px;
width:43px;
background:url('./images/img_navsprites_hover.gif')-91px 0;
}
#next a:hover {
background:url('./images/img_navsprites_hover.gif')-91px -45px;
}
</style>
</head>
<body >
<ul id="navlist">
<li id="home"><a href="/"></a></li>
<li id="prev"><a href="/css/"></a></li>
<li id="next"><a href="/css/"></a></li>
</ul>
</body>
</html>Example analysis:
Since the list item contains a link, we can use:hover pseudo-class
home a:hover{background: transparent url(img_navsprites_hover.gif) 0 -45px;} - For all three hover images, we specify the same background position, just 45px further down each Learning will be helpful. For more related content, please pay attention to the PHP Chinese website!
Related recommendations:
Use css to achieve shadow effects
The above is the detailed content of About CSS image stitching technology. 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
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
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
How to use bootstrap in vue
Apr 07, 2025 pm 11:33 PM
Using Bootstrap in Vue.js is divided into five steps: Install Bootstrap. Import Bootstrap in main.js. Use the Bootstrap component directly in the template. Optional: Custom style. Optional: Use plug-ins.
The Roles of HTML, CSS, and JavaScript: Core Responsibilities
Apr 08, 2025 pm 07:05 PM
HTML defines the web structure, CSS is responsible for style and layout, and JavaScript gives dynamic interaction. The three perform their duties in web development and jointly build a colorful website.
How to write split lines on bootstrap
Apr 07, 2025 pm 03:12 PM
There are two ways to create a Bootstrap split line: using the tag, which creates a horizontal split line. Use the CSS border property to create custom style split lines.
How to set up the framework for bootstrap
Apr 07, 2025 pm 03:27 PM
To set up the Bootstrap framework, you need to follow these steps: 1. Reference the Bootstrap file via CDN; 2. Download and host the file on your own server; 3. Include the Bootstrap file in HTML; 4. Compile Sass/Less as needed; 5. Import a custom file (optional). Once setup is complete, you can use Bootstrap's grid systems, components, and styles to create responsive websites and applications.
Understanding HTML, CSS, and JavaScript: A Beginner's Guide
Apr 12, 2025 am 12:02 AM
WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.
How to insert pictures on bootstrap
Apr 07, 2025 pm 03:30 PM
There are several ways to insert images in Bootstrap: insert images directly, using the HTML img tag. With the Bootstrap image component, you can provide responsive images and more styles. Set the image size, use the img-fluid class to make the image adaptable. Set the border, using the img-bordered class. Set the rounded corners and use the img-rounded class. Set the shadow, use the shadow class. Resize and position the image, using CSS style. Using the background image, use the background-image CSS property.
How to use bootstrap button
Apr 07, 2025 pm 03:09 PM
How to use the Bootstrap button? Introduce Bootstrap CSS to create button elements and add Bootstrap button class to add button text
How to resize bootstrap
Apr 07, 2025 pm 03:18 PM
To adjust the size of elements in Bootstrap, you can use the dimension class, which includes: adjusting width: .col-, .w-, .mw-adjust height: .h-, .min-h-, .max-h-
