This article introduces two fundamental CSS3 cnocepts: hover-based color change and background image styling. The examples demonstrate how pseudo-classes work and how to control bcakground images.
1. Hover Color Change
The following example shows how to change the color and font size of a hyperlink when hovering over it. It also covers other link states.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Hover Effect Demo</title>
<style>
a:hover {
color: #ffbf00;
font-size: 30px;
}
a:link {
color: green;
}
a:visited {
color: yellow;
}
a:active {
color: blueviolet;
}
</style>
</head>
<body>
<a href="input.html">Hover to change color</a>
<p class="box"></p>
<div class="box"></div>
<span></span><span></span><span></span>
</body>
</html>
2. Background Image with Fixed Attachment
This example demonstrates how to add a background image to a div element, with control over size, repeat, position, and scroll behavior.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Background Image 1</title>
<style>
div {
color: #ffbf00;
font-size: 50px;
font-weight: 90;
width: 400px;
height: 400px;
background-color: #a45858;
background-image: url("1.jpg");
background-size: 100px;
background-repeat: no-repeat;
background-position: center, top;
background-attachment: fixed;
}
p {
color: blueviolet;
font-size: 39px;
width: 700px;
height: 700px;
background-color: cornflowerblue;
}
</style>
</head>
<body>
<div>Div element</div>
<p>Paragraph element</p>
</body>
</html>
3. Background Image with Fixed Scrolling
The final example shows how to apply a fixed background image to the entire page, so it does not scroll with the content.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Background Image 2</title>
<style>
body {
width: 1000px;
height: 1000px;
background-image: url("2.jpg");
/* background-attachment: fixed keeps the background from scrolling */
background-attachment: fixed;
}
</style>
</head>
<body>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
<p>Testing fixed vs. scrolling background</p>
</body>
</html>