.wrappingr { float: right; shape-margin: 50px; width: 40%; } .wrappingl { float: left; shape-margin: 50px; width: 40%; } #fig-structure > figure > figcaption { float: left; clear: both; } What is happening when an addictive substance is used in the brain? Every addictive substance acts on a chemical in the brain called dopamine.