HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Colors</title>
<style>
body {
font: 100 1.5em Helvetica, Arial, sans-serif;
color: white;
background-color: black;
}
#p1 {
color: #f83333;
background-color: #444;
}
#p2 {
color: rgb(0,255,127);
background-color: rgba(50%,50%,0%,0.5);
}
#p3 {
color: hsl(240,100%,75%);
background-color: hsla(0,0%,100%,0.2);
}
</style>
</head>
<body>
<h1>Colors</h1>
<p>CSS color values can take <a href="/references/css/values/color/">one of several forms</a>.</p>
<p>This page's body is set to color: white; background-color: black;</p>
<p id="p1">This paragraph is set to color: #f83333; background-color: #444;</p>
<p id="p2">This paragraph is set to color: rgb(0,127,255); background-color: rgba(0%,50%,50%,0.5);</p>
<p id="p3">This paragraph is set to color: hsl(240,100%,75%); background-color: hsla(0,0%,100%,0.2);</p>
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</body>
</html>