10 Modern CSS Layouts for Websites – 2026

Advanced Responsive Utilities

The Sticky Sidebar Blog Post Layout (Grid + Sticky)

Long-form blog posts need a reading layout that stays out of the way. Grid handles the column split cleanly. The sidebar tracks scroll position without JavaScript. One CSS property does it.

position: sticky keeps the sidebar anchored while the article scrolls past it. Set top to match your header height. Use align-self: start on the sidebar or sticky won’t activate. That detail breaks most implementations.

<!-- HTML -->
<div class="blog-layout">
  <article class="blog-layout__post">
    <h1>How to Build Fast Layouts with Pure CSS</h1>

    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam.</p>

    <h2>Section One</h2>
    <p>Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident.</p>

    <h2>Section Two</h2>
    <p>Sunt in culpa qui officia deserunt mollit anim id est laborum. Curabitur pretium tincidunt lacus. Nulla gravida orci a odio nullam varius.</p>

    <h2>Section Three</h2>
    <p>Nullam varius, turpis molestie dictum semper, ex libero ullamcorper purus. Maecenas condimentum nunc nec elit auctor euismod. Sed interdum libero ut metus.</p>
  </article>

  <aside class="blog-layout__sidebar">
    <div class="sidebar-widget">
      <h3>Table of Contents</h3>
      <nav>
        <a href="#">Section One</a>
        <a href="#">Section Two</a>
        <a href="#">Section Three</a>
      </nav>
    </div>

    <div class="sidebar-widget">
      <h3>About the Author</h3>
      <p>Solo developer. Writing about CSS, performance, and shipping things.</p>
    </div>
  </aside>
</div>

/* CSS */
.blog-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  grid-template-areas: "post sidebar";
  gap: 3rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
  align-items: start;
}

.blog-layout__post {
  grid-area: post;
  max-width: 680px;
  line-height: 1.8;
}

.blog-layout__post h1 {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.blog-layout__post h2 {
  font-size: 1.3rem;
  margin: 2rem 0 0.75rem;
}

.blog-layout__post p {
  color: #444;
  font-size: 1rem;
}

.blog-layout__sidebar {
  grid-area: sidebar;
  position: sticky;
  top: 1.5rem;        /* Adjust to match your fixed header height */
  align-self: start;  /* Critical — sticky fails without this */
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.sidebar-widget {
  background: #f9f9f9;
  border: 1px solid #e5e5e5;
  border-radius: 0.6rem;
  padding: 1.25rem;
}

.sidebar-widget h3 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.75rem;
  color: #111;
}

.sidebar-widget nav {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.sidebar-widget nav a {
  font-size: 0.875rem;
  color: #555;
  text-decoration: none;
  padding: 0.25rem 0;
  border-bottom: 1px solid #efefef;
}

.sidebar-widget nav a:last-child {
  border-bottom: none;
}

.sidebar-widget nav a:hover {
  color: #111;
}

.sidebar-widget p {
  font-size: 0.875rem;
  color: #666;
  line-height: 1.6;
}

/* Collapse sidebar below post on mobile */
@media (max-width: 768px) {
  .blog-layout {
    grid-template-columns: 1fr;
    grid-template-areas:
      "post"
      "sidebar";
    gap: 2rem;
  }

  .blog-layout__sidebar {
    position: static;
  }
}

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The Minimalist Footer Framework (Flexbox Row-Wrap)

Footer link columns collapse badly on narrow screens when built with floats or fixed-width grids. flex-wrap: wrap solves it. Each column becomes a flex child. They wrap naturally at your set minimum width.

You don’t control which row a column lands on. The browser does. That’s the point. Set flex: 1 1 180px per column. Four columns on desktop become two rows on tablet and one on mobile.

<!-- HTML -->
<footer class="footer">
  <div class="footer__inner">

    <div class="footer__brand">
      <span class="footer__logo">YourBrand</span>
      <p>Clean, fast websites without the framework overhead.</p>
    </div>

    <div class="footer__col">
      <h4>Product</h4>
      <ul>
        <li><a href="#">Features</a></li>
        <li><a href="#">Pricing</a></li>
        <li><a href="#">Changelog</a></li>
        <li><a href="#">Roadmap</a></li>
      </ul>
    </div>

    <div class="footer__col">
      <h4>Resources</h4>
      <ul>
        <li><a href="#">Documentation</a></li>
        <li><a href="#">API Reference</a></li>
        <li><a href="#">Tutorials</a></li>
        <li><a href="#">Status</a></li>
      </ul>
    </div>

    <div class="footer__col">
      <h4>Company</h4>
      <ul>
        <li><a href="#">About</a></li>
        <li><a href="#">Blog</a></li>
        <li><a href="#">Careers</a></li>
        <li><a href="#">Contact</a></li>
      </ul>
    </div>

  </div>

  <div class="footer__bottom">
    <p>&copy; 2026 YourBrand. All rights reserved.</p>
    <div class="footer__legal">
      <a href="#">Privacy</a>
      <a href="#">Terms</a>
      <a href="#">Cookies</a>
    </div>
  </div>
</footer>

/* CSS */
.footer {
  background: #111;
  color: #ccc;
  padding: 4rem 1.5rem 2rem;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  max-width: 1100px;
  margin: 0 auto;
  padding-bottom: 3rem;
  border-bottom: 1px solid #2a2a2a;
}

.footer__brand {
  flex: 1 1 220px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer__logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
}

.footer__brand p {
  font-size: 0.875rem;
  line-height: 1.6;
  color: #888;
}

.footer__col {
  flex: 1 1 160px; /* Each column wraps at 160px minimum */
}

.footer__col h4 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 1rem;
}

.footer__col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer__col ul a {
  font-size: 0.875rem;
  color: #888;
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer__col ul a:hover {
  color: #fff;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  max-width: 1100px;
  margin: 2rem auto 0;
}

.footer__bottom p {
  font-size: 0.8rem;
  color: #555;
}

.footer__legal {
  display: flex;
  gap: 1.25rem;
}

.footer__legal a {
  font-size: 0.8rem;
  color: #555;
  text-decoration: none;
}

.footer__legal a:hover {
  color: #fff;
}

The Container Query Card (Modern CSS)

Viewport-based media queries style components based on screen width. That’s the wrong signal. A card in a narrow sidebar needs different styling than the same card in a wide main column. Same viewport, different context.

Container queries fix this. Wrap the card in a container. Query that container’s width instead. The card responds to where it lives, not how big the screen is. Browser support is solid from 2023 onward.

<!-- HTML -->
<div class="card-container card-container--narrow">
  <div class="cq-card">
    <img src="product.webp" alt="Product image" width="400" height="300" />
    <div class="cq-card__body">
      <span class="cq-card__tag">New</span>
      <h3>Product Title</h3>
      <p>A short description that adapts based on the parent container width.</p>
      <a href="#" class="cq-card__btn">View Product</a>
    </div>
  </div>
</div>

<!-- Same card, wider container context -->
<div class="card-container card-container--wide">
  <div class="cq-card">
    <img src="product.webp" alt="Product image" width="400" height="300" />
    <div class="cq-card__body">
      <span class="cq-card__tag">New</span>
      <h3>Product Title</h3>
      <p>A short description that adapts based on the parent container width.</p>
      <a href="#" class="cq-card__btn">View Product</a>
    </div>
  </div>
</div>

/* CSS */

/* Step 1: Define the container */
.card-container {
  container-type: inline-size;
  container-name: card;
}

/* Demo widths — in production these come from your grid */
.card-container--narrow {
  max-width: 280px;
}

.card-container--wide {
  max-width: 680px;
}

/* Base card style — stacked layout (narrow default) */
.cq-card {
  display: flex;
  flex-direction: column;
  border: 1px solid #e5e5e5;
  border-radius: 0.75rem;
  overflow: hidden;
  background: #fff;
}

.cq-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.cq-card__body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.cq-card__tag {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #777;
}

.cq-card__body h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #111;
}

.cq-card__body p {
  font-size: 0.875rem;
  color: #666;
  line-height: 1.5;
}

.cq-card__btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: #111;
  color: #fff;
  text-decoration: none;
  border-radius: 0.35rem;
  font-size: 0.85rem;
  width: fit-content;
  margin-top: 0.25rem;
}

/* Step 2: Query the container, not the viewport */
@container card (min-width: 480px) {
  .cq-card {
    flex-direction: row;  /* Switch to horizontal layout in wide containers */
    align-items: stretch;
  }

  .cq-card img {
    width: 240px;
    height: auto;
    flex-shrink: 0;
  }

  .cq-card__body {
    padding: 1.75rem;
    justify-content: center;
  }

  .cq-card__body h3 {
    font-size: 1.2rem;
  }
}

The Centered Empty-State / 404 Hero (Flexbox Center)

Empty states and 404 pages get treated as afterthoughts. They shouldn’t be. A user hit a dead end. Your layout should hold their attention and redirect them fast. Centering everything helps focus it.

Two flexbox rules do the job. Set the container to min-height: 100vh display: flex. Add align-items: center and justify-content: center. Content locks dead center every time, on every screen, with no calculation needed.

<!-- HTML -->
<main class="empty-state">
  <div class="empty-state__content">
    <span class="empty-state__code">404</span>
    <h1>Page not found.</h1>
    <p>That URL doesn't exist. It may have moved or been deleted.</p>
    <div class="empty-state__actions">
      <a href="/" class="btn btn--primary">Back to Home</a>
      <a href="/sitemap" class="btn btn--ghost">View Sitemap</a>
    </div>
  </div>
</main>

/* CSS */
.empty-state {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem 1.5rem;
  background: #fff;
  text-align: center;
}

.empty-state__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  max-width: 480px;
}

.empty-state__code {
  font-size: clamp(5rem, 15vw, 9rem);
  font-weight: 800;
  line-height: 1;
  color: #ebebeb;
  letter-spacing: -0.04em;
  display: block;
  user-select: none;
}

.empty-state__content h1 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: #111;
  margin: 0;
}

.empty-state__content p {
  font-size: 1rem;
  color: #777;
  line-height: 1.6;
  margin: 0;
}

.empty-state__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 0.5rem;
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.4rem;
  border-radius: 0.4rem;
  font-size: 0.9rem;
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.15s ease;
}

.btn:hover {
  opacity: 0.8;
}

.btn--primary {
  background: #111;
  color: #fff;
}

.btn--ghost {
  background: transparent;
  color: #111;
  border: 1px solid #ddd;
}

/* Already responsive — flex centers on all screen sizes */
/* Only tweak needed: reduce code number on very small screens */
@media (max-width: 360px) {
  .empty-state__code {
    font-size: 4.5rem;
  }
}