Why are my <div>s leaving their parent <div>?

 

This question already has an answer here:

  • Why is my div's height zero 3 answers
  • How do you keep parents of floated elements from collapsing? [duplicate] 16 answers

    • Parents will normally expand to the height of their children, though won't in case the children are floated.

  • You can remove floats to accomplish expanding.
  • In order to expand a parentdiv based on floated children try overflow: auto; on .pictureBox. This will make .pictureBox expand to the height of its children. Here's a Fiddle showing the result.
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