$spaces: 0 5 10 15 25 30 35 40 45 50;
@mixin margin($space) {
    &.margin {
        &.left-#{$space} {
            margin-left: $space*1px;
        }
        &.right-#{$space} {
            margin-right: $space*1px;
        }
        &.top-#{$space} {
            margin-top: $space*1px;
        }
        &.bottom-#{$space} {
            margin-bottom: $space*1px;
        }
        &.all-#{$space} {
            margin : $space*1px;
        }
    }
}

@mixin padding($space) {
    &.padding {
        &.left-#{$space} {
            padding-left: $space*1px;
        }
        &.right-#{$space} {
            padding-right: $space*1px;
        }
        &.top-#{$space} {
            padding-top: $space*1px;
        }
        &.bottom-#{$space} {
            padding-bottom: $space*1px;
        }
        &.all-#{$space} {
            padding: $space*1px;
        }
    }
}

.ls-space {
    @each $space in $spaces {
        @include margin($space);
    }
    @each $space in $spaces {
        @include padding($space);
    }
}