How to force parent div to expand by child div width/padding/margin/box?

Question

I want to expand div parent with child div but I don\'t know if that\'s possible and how to do it.

Answer 1

Your problem is this:

div.two {
        background-color: green;
        width: 120%;
}

You are telling the child to be 120% the width of the parent, which is to say, the entire width plus 20% more. Make it 100% and you should get the expected result..