Title
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style type="text/css">
h1{
color:#123;
}
.abc{
color:#234;
}
#asd{
color:#345;
}
</style>
</head>
<body>
<h1>123</h1>
<div class="abc">234</div>
<div id="asd">345</div>
</body>
</html>```