CSS Flexbox - Align Items

Exercise

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 Flexbox</h1>
  <h3>Align Items</h3>
  <!-- flex container -->
  <div class="flex-container flex-start">
    <!-- flex items -->
    <div class="box flex-item-1">
      <p>Flex Item 1</p>
    </div>
    <div class="box flex-item-2">
      <p>Flex Item 2</p>
    </div>
    <div class="box flex-item-3">
      <p>Flex Item 3</p>
    </div>
  </div>
  <!-- flex container -->
  <div class="flex-container flex-end">
    <!-- flex items -->
    <div class="box flex-item-1">
      <p>Flex Item 1</p>
    </div>
    <div class="box flex-item-2">
      <p>Flex Item 2</p>
    </div>
    <div class="box flex-item-3">
      <p>Flex Item 3</p>
    </div>
  </div>
  <!-- flex container -->
  <div class="flex-container flex-center">
    <!-- flex items -->
    <div class="box flex-item-1">
      <p>Flex Item 1</p>
    </div>
    <div class="box flex-item-2">
      <p>Flex Item 2</p>
    </div>
    <div class="box flex-item-3">
      <p>Flex Item 3</p>
    </div>
  </div>
</body>

</html>

Save.
If "Live Server" is not already running, right-click anywhere in the editor and select "Open with Live Server" from the context menu.
In the "styles.css" file, replace the code with the following:

.flex-container {
  border: 5px solid blue;
  display: flex;
  margin: 10px;
  height: 250px;
}

.flex-start {
  align-items: flex-start;
}

.flex-end {
  align-items: flex-end;
}

.flex-center {
  align-items: center;
}

.box {
  padding: 10px;
  width: 100px;
  height: 100px;
  text-align: center;
  font-size: 20px;
}

.flex-item-1 {
  background: red;
}

.flex-item-2 {
  background: green;
}

.flex-item-3 {
  background: yellow;
}

Save.
In the browser, you should see the following:

Code Walkthrough and Explanation

`align-items`

In CSS, align-items is a property used in Flexbox layouts to align flex items along the cross-axis (vertical axis) of the flex container. It specifies the default alignment for all flex items within a flex container when there is extra space in the cross-axis. The possible values for align-items include:

stretch (default): Flex items are stretched to fill the container.
flex-start: Flex items are aligned to the start of the container's cross-axis.
flex-end: Flex items are aligned to the end of the container's cross-axis.
center: Flex items are aligned to the center of the container's cross-axis.
baseline: Flex items are aligned to their baselines.

Experiment with the Code

Try adding your own boxes and using different values for align-items.

Video and Code References

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GitHub and Other References