CSS Grid - Repeat Function

Exercise

  1. In the "index.html" file, replace the code with the following:
<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>CSS</title>
  <link rel="stylesheet" href="./css/styles.css">
</head>

<body>
  <h1>CSS Grid</h1>
  <h3>Repeat Function</h3>
  <!-- grid container -->
  <div class="grid-container-3-columns-by-3-rows">
    <!-- flex items -->
    <div class="box box1">
      <p>Grid Item 1</p>
    </div>
    <div class="box box2">
      <p>Grid Item 2</p>
    </div>
    <div class="box box3">
      <p>Grid Item 3</p>
    </div>
    <div class="box box4">
      <p>Grid Item 4</p>
    </div>
    <div class="box box5">
      <p>Grid Item 5</p>
    </div>
    <div class="box box6">
      <p>Grid Item 6</p>
    </div>
  </div>
  <!-- grid container -->
  <div class="grid-container-3-columns-by-3-rows-repeat">
    <!-- flex items -->
    <div class="box box1">
      <p>Grid Item 1</p>
    </div>
    <div class="box box2">
      <p>Grid Item 2</p>
    </div>
    <div class="box box3">
      <p>Grid Item 3</p>
    </div>
    <div class="box box4">
      <p>Grid Item 4</p>
    </div>
    <div class="box box5">
      <p>Grid Item 5</p>
    </div>
    <div class="box box6">
      <p>Grid Item 6</p>
    </div>
  </div>
</body>

</html>
  1. Save.
  2. If "Live Server" is not already running, right-click anywhere in the editor and select "Open with Live Server" from the context menu.
  3. In the "styles.css" file, replace the code with the following:
/* Reset Browser Defaults */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.grid-container-3-columns-by-3-rows {
  border: 5px solid blue;
  margin: 10px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
}

.grid-container-3-columns-by-3-rows-repeat {
  border: 5px solid blue;
  margin: 10px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.box {
  padding: 1rem;
  border: 2px solid red;
}

.box1 {
  background: green;
}

.box2 {
  background: yellow;
}

.box3 {
  background: orange;
}

.box4 {
  background: brown;
}

.box5 {
  background: grey;
}

.box6 {
  background: violet;
}
  1. Save.
  2. In the browser, you should see the following:

    3. Exercise 2 Result

Code Walkthrough and Explanation


repeat()

The repeat() function is a CSS grid function that allows you to specify the number of repetitions of a given grid track listing, as well as the size of each track. It is used to simplify the process of creating grids with a lot of similar tracks, as it can be cumbersome to write out each track listing individually.

The repeat() function takes two arguments: the first argument specifies the number of times to repeat the given track listing, and the second argument specifies the size of each track. For example, the following code creates a grid with three columns that are each 100 pixels wide:

grid-template-columns: repeat(3, 100px);

You can also use the repeat() function to create more complex track listings. For example, the following code creates a grid with three columns, where the first column is 200 pixels wide, the second column is 1 fraction unit wide, and the third column is 100 pixels wide:

grid-template-columns: 200px repeat(1, 1fr) 100px;

In this case, the repeat() function is only used to specify the number of times to repeat the 1fr unit, which is a flexible unit that takes up any available space in the grid container.


Experiment with the Code


Video and Code References


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GitHub and Other References