Hari 3: CSS Grid Responsive

Layout dua dimensi dengan CSS Grid — template columns, auto-fit/minmax, dan area yang menyesuaikan layar.

Pengantar

Flexbox hebat untuk satu sumbu. CSS Grid unggul untuk layout dua dimensi (baris + kolom) — galeri, dashboard, halaman artikel.

Dasar Grid

.container {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
}

fr = fraction (bagi sisa ruang).

Auto-fit + minmax (pola emas responsive)

grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));

Kolom otomatis bertambah/berkurang tanpa banyak media query.

Galeri auto-fit

<style>
body { font-family: system-ui, sans-serif; margin: 1rem; }
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
}
.item {
  background: #0f766e;
  color: white;
  border-radius: 0.75rem;
  padding: 1.5rem 1rem;
  text-align: center;
}
</style>
<div class="gallery">
<div class="item">1</div>
<div class="item">2</div>
<div class="item">3</div>
<div class="item">4</div>
<div class="item">5</div>
<div class="item">6</div>
</div>

Preview

Layout halaman dengan area

Header / main / side / footer

<!DOCTYPE html>
<html lang="id">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <style>
    * { box-sizing: border-box; }
    body {
      margin: 0;
      font-family: system-ui, sans-serif;
      display: grid;
      gap: 0.75rem;
      padding: 0.75rem;
      grid-template-columns: 1fr;
      grid-template-areas:
        "header"
        "main"
        "side"
        "footer";
      min-height: 100vh;
    }
    header, main, aside, footer {
      padding: 1rem;
      border-radius: 0.75rem;
    }
    header { grid-area: header; background: #0f172a; color: white; }
    main { grid-area: main; background: #ccfbf1; }
    aside { grid-area: side; background: #e2e8f0; }
    footer { grid-area: footer; background: #f1f5f9; }
    @media (min-width: 700px) {
      body {
        grid-template-columns: 2fr 1fr;
        grid-template-areas:
          "header header"
          "main side"
          "footer footer";
      }
    }
  </style>
</head>
<body>
  <header>Header</header>
  <main>Main content</main>
  <aside>Sidebar</aside>
  <footer>Footer</footer>
</body>
</html>

<!DOCTYPE html>
<html lang="id">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <style>
    * { box-sizing: border-box; }
    body {
      margin: 0;
      font-family: system-ui, sans-serif;
      display: grid;
      gap: 0.75rem;
      padding: 0.75rem;
      grid-template-columns: 1fr;
      grid-template-areas:
        "header"
        "main"
        "side"
        "footer";
      min-height: 100vh;
    }
    header, main, aside, footer {
      padding: 1rem;
      border-radius: 0.75rem;
    }
    header { grid-area: header; background: #0f172a; color: white; }
    main { grid-area: main; background: #ccfbf1; }
    aside { grid-area: side; background: #e2e8f0; }
    footer { grid-area: footer; background: #f1f5f9; }
    @media (min-width: 700px) {
      body {
        grid-template-columns: 2fr 1fr;
        grid-template-areas:
          "header header"
          "main side"
          "footer footer";
      }
    }
  </style>
</head>
<body>
  <header>Header</header>
  <main>Main content</main>
  <aside>Sidebar</aside>
  <footer>Footer</footer>
</body>
</html>

Preview

Kuis hari 3

Pola mana yang paling membantu grid responsive tanpa banyak breakpoint?

Unit fr pada grid artinya?

Checklist

0/4 selesai

Mencoba auto-fit + minmax
Menyusun grid-template-areas
Mengerti kapan pilih Grid vs Flex
Siap ke responsive images