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<style>
.blue-color {
color:blue;
}
.green-color {
color:green;
}
.teal-color {
color:teal;
}
.yellow-color {
color:yellow;
}
.red-color {
color:red;
}
</style>
<i class='fa fa-star blue-color'></i>
<i class='fa fa-star green-color'></i>
<i class='fa fa-star teal-color'></i>
<i class='fa fa-star yellow-color'></i>
<i class='fa fa-star red-color'></i>
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<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
<link rel='stylesheet' href='https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css'>
</head>
<body>
<i class='fa fa-star'></i>
</body>
</html>
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<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
<link rel='stylesheet' href='https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css'>
</head>
<body>
<i class='fa fa-star'></i>
</body>
</html>