CSS Tutorial
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CSS Advanced
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CSS Responsive
CSS Grid
CSS Image Sprites
An image sprite is defines as a collection of images that put it into a single image.
A web page having many images takes a long time to load and creates many server requests.
Ismage sprites reduces the number of server requests and save bandwidth.
Image Sprites – Simple Example
Lets use single image , instead of using three separate images
HTML

CSS
#home {
width: 46px;
height: 44px;
background-image: url('home.png') 0 0;
}
#next {
width: 43px;
height: 44px;
background: url('next.gif') -91px 0;
}
Output

Example explained:
<img id=”home” src=”home.gif”> – Only specifies a small transparent image as the src attribute cannot be empty. The displayed image is specifies using CSS, which will be the background image.
width: 46px; height: 44px; – Specifies the portion of the image that is to be used.
background: url(next.gif) 0 0; – Specifies the background image and its position (left 0px, top 0px)
Image Sprites – Create a Navigation List
Use the sprite image (“next.gif”) to create a navigation list.
Using an HTML list, as it can be a link and also acts as a support to background image:
HTML
CSS
#navlist {
position: relative;
}
#navlist li {
margin: 0;
padding: 0;
list-style: none;
position: absolute;
top: 0;
}
#navlist li, #navlist a {
height: 44px;
display: block;
}
#home {
left: 0px;
width: 46px;
background: url('navsprites.gif') 0 0;
}
#prev {
left: 63px;
width: 43px;
background: url('navsprites.gif') -47px 0;
}
#next {
left: 129px;
width: 43px;
background: url('navsprites.gif') -91px 0;
}
Output

Example explained:
- #navlist {position:relative;} – position is set to relative to enables absolute positioning within it.
- #navlist li {margin:0;padding:0;list-style:none;position:absolute;top:0;} – margin and padding are set to 0, list-style is removed, and all list items are absolute positioned.
- #navlist li, #navlist a {height:44px;display:block;} – the height of all the images are 44px.
Now start to position and style for each specific part:
- #home {left:0px;width:46px;} – Positioned to the left, and the width of the image is set to 46px.
- #home {background:url(img_navsprites.gif) 0 0;} – Specifies the background image and its position (left 0px, top 0px).
- #prev {left:63px;width:43px;} – Positioned 63px to the right (#home width 46px + some extra space between items), and the width is 43px.
- #prev {background:url(‘img_navsprites.gif’) -47px 0;} – Specifies the background image 47px to the right (#home width 46px + 1px line divider).
- #next {left:129px;width:43px;}- Positioned 129px to the right (start of #prev is 63px + #prev width 43px + extra space), and the width is 43px.
- #next {background:url(‘img_navsprites.gif’) -91px 0;} – Specifies the background image 91px to the right (#home width 46px + 1px line divider + #prev width 43px + 1px line divider )