Novice advice: How to prevent too much div content from being inserted into another div_html/css_WEB-ITnose

There are three divs, namely, header, content, and footer. If there are too many things in the content, they will be displayed in the footer. What should I do? Thank you

Reply to the discussion (solution)

style="overflow:hidden"

overflow

can be controlled through overflow in css, or its height can be fixed

fixed content area Height, or hide it using overflow