usefull sass mixins

1.adding a flex display to a parent.

@mixin flex ($direction , $justify , $align){
    display: flex;
    flex-direction: $direction;
    justify-content: $justify;
    align-items: $align;
}

2.width and height

@mixin wh($width , $height){
    width: $width;
    height: $height;
}