In CSS Box Alignment, a fallback alignment is specified in order to deal with cases where the requested alignment cannot be fulfilled. For example, if you specify justify-content: space-between there must be more than one alignment subject. If there is not, the fallback alignment is used. This is specified per alignment method, as detailed below....Skip to search Skip to select language Article Actions English (US)...(US) Remember language Deutsch Français 日本語 한국어 中文 (简体) In CSS...