Box Model & Layout

CSS Grid

Two-dimensional layouts with rows and columns.

1Grid Container

Set display: grid and define columns/rows with grid-template-columns / grid-template-rows.

Example Code

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

2fr Unit & Auto

fr is a fractional unit of available space. Use auto for content-sized tracks.

Example Code

.grid {
  display: grid;
  grid-template-columns: 200px 1fr 1fr;
}

3Grid Areas

Name areas to build complex layouts in a readable way.

Example Code

.layout {
  display: grid;
  grid-template-areas:
    "header header"
    "sidebar main"
    "footer footer";
  grid-template-columns: 200px 1fr;
}
.header  { grid-area: header; }
.sidebar { grid-area: sidebar; }
.main    { grid-area: main; }
.footer  { grid-area: footer; }

4Auto-fit & minmax

Build responsive grids without media queries.

Example Code

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

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CSS Flexbox

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Media Queries