HTML CS

1. Basic html template
<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title></title>
	<link rel="stylesheet" href="style.css">
</head>
<body>
	<script src="script.js"></script>
</body>
</html> 

			
2. Bootstrap links
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">

<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>

3. Fav-icon
<link rel="shortcut icon" href="../your-path/fav-icon.png" type="image/x-icon">

4. Font-awesome cdn
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fortawesome/fontawesome-free@5.15.3/css/fontawesome.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<!-- Here you can use any icon name insted of facebook -->
<i class="fa fa-facebook"></i>

5. Prismjs cdn (code styling)
<link href="https://myCDN.com/prism@v1.x/themes/prism.css" rel="stylesheet" />

<script src="https://myCDN.com/prism@v1.x/components/prism-core.min.js"></script>
<script src="https://myCDN.com/prism@v1.x/plugins/autoloader/prism-autoloader.min.js"></script>
6. Meta-tags
<meta name="title" content="title of your website">
<meta name="description" content="your description">
<!-- best keywords for rank your website in google... something like this...-->
<meta name="keywords" content="cheat sheets, amazing cheat sheets, programming cheat cheets, coding cheat sheets">
<meta name="robots" content="index, follow">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="language" content="English">
<!-- enter that days when google's bot visit your website after that days...-->
<meta name="revisit-after" content="5 days">
<meta name="author" content="author name">
7. Disable zoom in webpages
<meta name='viewport' content='width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0' >