Set width: full 320 768 1024 1920 custom
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Three Column Responsive HTML Layout</title>
<meta name="description" content="A three column responsive layout with a navigation sidebar, main content area, and a right column.">
<style>
body {
margin: 0;
font-family: sans-serif;
background: #ddd;
min-width: 320px;
}
.wrap {
max-width: 1280px;
margin-left: auto;
margin-right: auto;
display: flex;
}
.sidebar {
width: 200px;
flex-shrink: 0;
background-color: #555;
color: white;
padding: 1rem 1.5rem;
box-sizing: border-box;
position: relative;
transition: left 0.3s;
}
.sidebar a {
color: white;
text-decoration: none;
display: block;
padding: 10px 0;
}
.main-content {
flex-grow: 1;
padding: 1rem 1.5rem;
background: #fff;
transition: margin-left 0.3s;
}
.main-content h1 {
margin-top: 0;
}
.right-column {
width: 280px;
flex-shrink: 0;
background-color: #777;
color: white;
padding: 1rem 1.5rem;
box-sizing: border-box;
position: relative;
transition: right 0.3s;
}
.right-column a {
color: white;
text-decoration: none;
display: block;
padding: 10px 0;
}
.hamburger {
display: none;
font-size: 30px;
cursor: pointer;
padding: 15px;
}
#menu-toggle {
display: none;
}
#menu-toggle:checked ~ .sidebar {
left: 0;
}
@media (max-width: 1023px) {
.wrap {
flex-direction: column;
}
.sidebar {
position: fixed;
height: 100vh;
left: -200px;
z-index: 50;
}
.right-column {
position: relative;
height: auto;
width: 100%;
background-color: #fff;
color: inherit;
padding-top: 0;
}
.right-column a {
color: inherit;
}
.hamburger {
display: block;
position: absolute;
z-index: 10;
right: .5rem;
top: .5rem;
padding: 5px 8px;
}
#menu-toggle:checked ~ .sidebar {
left: 0;
}
#menu-toggle:checked ~ .main-content {
margin-left: 0;
}
}
</style>
</head>
<body>
<div class="wrap">
<input type="checkbox" id="menu-toggle">
<label for="menu-toggle" class="hamburger">☰</label>
<div class="sidebar">
<a href="#">Home</a>
<a href="#">About</a>
<a href="#">Services</a>
<a href="#">Contact</a>
</div>
<div class="main-content">
<h1>Main Content Area</h1>
<p>This is where the page content goes.</p>
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</div>
<div class="right-column">
<p>This is the right column content.</p>
<a href="#">Link 1</a>
<a href="#">Link 2</a>
<a href="#">Link 3</a>
<p>On desktop view, this content should be on the right side of the main content area</p>
<p>On mobile view, this content should be beneath the main content area and should have a white background color.</p>
</div>
</div>
</body>
</html>