Demo
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Summary
<div class="container">
<div class="row">
<div class="col">
col
</div>
<div class="col-6">
col-6
</div>
<div class="col">
col
</div>
</div>
</div>
Details
You can modify the col class by adding a dash and a number at the end. You can use the numbers 1 through 12 (e.g., col-1, col-2, col-3, all the way up to col-12).
By adding a number to the column class, you are specifying the size of that column. Remember, Bootstrap is based on a 12-column system. If you use the class col-12, that column will take up the entire row. If you use col-6, that column will take up half of the row, and the other columns will fill in the remaining space.
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Exercises
Recreate the HTML code from the Demo section in your index.html file.
Try changing the number on the column class. Remember, you can use the numbers 1 through 12. Try resizing the window as well.