How Can Margins Be Used to Make a Div Fill Remaining Space Between Other Divs?

Using Margins to Fill the Remaining Space

In your HTML, you have set the widths of div1 and div3, but not div2. This leaves an unknown amount of space between the left and right columns, which is where div2 should be.

To make div2 fill the remaining width, you can use margins. Here's how:

#Main {
  width: 500px;
}

#div1 {
  width: 100px;
  float: left;
}

#div2 {
  margin-left: 100px;
  margin-right: 100px;
}

#div3 {
  width: 100px;
  float: right;
}

In this CSS:

• The width of div2 is not set explicitly. Instead, its left and right margins are set to 100px each. This forces div2 to occupy the space between div1 and div3.
• Note that div2 is placed after div3 in the HTML. This ensures that div2 is positioned between the margins of div1 and div3, rather than being pushed to the end of the container.

With these CSS changes, div2 will automatically fill the remaining width within the #Main container, ensuring that there are no empty gaps between the three columns.

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