<div class="container">
  <header class="header">
    <h1>Website Name</h1>
  </header>
  <div class="content">
    <main class="main">
      <h2>Main Content</h2>
      <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa.</p>
      <p>Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, pellentesque eu, pretium quis, sem. Nulla consequat massa quis enim. Donec pede justo, fringilla vel, aliquet nec, vulputate eget, arcu.</p>
      <p>In enim justo, rhoncus ut, imperdiet a, venenatis vitae, justo. Nullam dictum felis eu pede mollis pretium. Integer tincidunt. Cras dapibus. </p>
      <p>Maecenas tempus, tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit id, lorem. Maecenas nec odio et ante tincidunt tempus. Donec vitae sapien ut libero venenatis faucibus.</p>
      <p>Nullam quis ante. Etiam sit amet orci eget eros faucibus tincidunt. Duis leo. Sed fringilla mauris sit amet nibh. Donec sodales sagittis magna. Sed consequat, leo eget bibendum sodales, augue velit cursus nunc,</p>
    </main>
    <aside class="aside">
      <h3>Sidebar</h3>
      <p>Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo.</p>
    </aside>
  </div>
  <footer class="footer">
    &copy;2020 Company Name
  </footer>
</div>
body {
  margin: 0;
  padding: 0;
  font: 100%/1.5 "Noto Sans JP", sans-serif;
  background: lavender;
}
/* Layout Code */
.container {
  margin: 0 auto;
  min-height: 100vh;
  max-width: 1000px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 0 20px 0 rgba(0, 0, 0, 0.2);
}
.header {
  display: flex;
  height: 100px;
  padding: 0 20px;
  align-items: center;
  background: lightpink;
}
.content {
  flex: 1;
  display: flex;
}
.main {
  flex: 1;
  padding: 0 20px;
  background: snow;
}
.aside {
  width: 260px;
  padding: 0 20px;
  background: papayawhip;
}
.footer {
  display: flex;
  height: 50px;
  align-items: center;
  justify-content: center;
  background: lightsteelblue;
}

/* Content Code */
.header h1 {
  margin: 0;
  font-size: 1.75rem;
  text-transform: uppercase;
}
.main h2,
.aside h3 {
  font-size: 1.5rem;
  margin: 1.5rem 0;
}
.main p,
.aside p {
  margin: 0.75rem 0;
}
.aside,
.footer {
  font-size: 0.875rem;
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.