Tag. The default background color of a div is transparent. So we make all the div's children inside the parent div able to be handled using Flexbox properties . Topic: HTML / CSS Prev|Next Answer: Set the 100% height for parents too. This chapter explains how this works and the few important key differences between Dash HTML components and standard html. In Bootstrap, container is used to set the content's margins dealing with the responsive behaviors of your layout. The div HTML tag is used to group HTML block elements like paragraphs, headings, and format those with style or CSS. The
element should be used only when no other semantic element (such as