How can you align block-type elements in one line?

 To align block-type elements in one line, you can use CSS flexbox. Here are the steps to achieve this:

1. Set the display property of the parent container to flex using the display: flex; property in CSS.

2. Specify the alignment of the flex items along the main axis using the justify-content property. For example, justify-content: center; will horizontally center the flex items.

3. Optionally, you can set the alignment of the flex items along the cross axis using the align-items property. For example, align-items: center; will vertically center the flex items.

Here's an example code snippet that aligns three block-type elements in one line:

In this example, the container div is set to display: flex;, which aligns the child elements in one line. The justify-content: space-between; property is used to distribute the child elements with equal spacing between them. Finally, align-items: center; centers the child elements vertically.