HTML Layout Tutorial: Mastering Web Page Structure

<!DOCTYPE html>
<html>
<head>

<title>Webtutor.dev</title>
<style>
body {
    margin: 0 auto;
    background-position:center;
    background-size: contain;
}
header {
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px;
    border-bottom: 1px solid #eee;
}
.logo img {
    height:35px;
}
.menu a {
    color: #212b36;
    text-align: center;
    padding: 12px 16px;
    text-decoration: none;
    font-size: 18px;
}
.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    height: calc(100vh - 115px);
padding:16px;
}
.hero h3 {
    font-size: 30px;
}
footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    font-size: 20px;
    font-weight: bold;
    background-color: #00ab55;
    color: #fff;
    padding: 16px 0;
    text-align: center;
}
</style>

</head>
<body>
	

<header>
  <div class="logo">
  	<img src="https://webtutor.dev/assets/img/logo/logo.svg" alt="Webtutor.dev">
  </div>

<div class="menu">
	<a href="#home">Home</a>
	<a href="#html">HTML</a>
	<a href="#css">CSS</a>
	<a href="#javascript">Java Script</a>
  </div>
</header>
  

<section class="hero">
	<h3>Content section</h3>
</section>

<footer>Footer Section</footer>

</body>
</html>

Commands	Shortcut Key (Win)	Shortcut Key (Mac)
selectAll	Ctrl-A	Cmd-A
singleSelection	Esc	-
killLine	-	Ctrl-K (Mac)
deleteLine	Ctrl-D	Cmd-D
undo	Ctrl-Z	Cmd-Z
redo	Ctrl-Y	Shift-Cmd-Z, Cmd-Y
undoSelection	Ctrl-U	Cmd-U
redoSelection	Alt-U	Shift-Cmd-U
goDocStart	Ctrl-Home	Cmd-Up, Cmd-Home
goDocEnd	Ctrl-End	Cmd-End, Cmd-Down
goLineStart	Alt-Left	Ctrl-A
goLineEnd	Alt-Right	Ctrl-E
goLineRight	-	Cmd-Right
goLineLeft	-	Cmd-Left
goLineUp	Up	Ctrl-P
goLineDown	Down	Ctrl-N
goPageUp	PageUp	Shift-Ctrl-V
goPageDown	PageDown	Ctrl-V
newlineAndIndent	Enter	-
save	Ctrl-S	Cmd-S