1.including a flex show to a guardian. @mixin flex ($course , $justify , $align){ show: flex; flex-direction: $course; justify-content: $justify; align-items: $align; } Enter fullscreen modeExit fullscreen mode 2.width and top @mixin wh($width , $top){ width: $width; top: $top; } Enter fullscreen modeExit fullscreen mode Read More