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CSS

Liam Maclachlan
Liam Maclachlan
22,805 Points
Posted by Liam Maclachlan
Liam Maclachlan
22,805 Points

Media query based grid system: Sharing some fun with SASS development

So, I took a little bit of time and wanted to create a responsive grid sytem that would allow me to add and remove screen sizes with minimal fuss and maintenance. This is what I have come up with: (Codepen)

// Media breakpoints
$media__xsmall      : 1px;
$media__small       : 480px;
$media__medium      : 768px;
$media__large       : 960px;
$media__xlarge      : 1080px;

//Media queries
@mixin media($breakpoint) {
    @if $breakpoint == "xsmall" {
        @media screen and (min-width: $media__xsmall) and (max-width: $media__small - 1 ) {
            @content;
        }
    }
    @else if $breakpoint == "small" {
        @media screen and (min-width: $media__small) and (max-width: $media__medium - 1 ) {
            @content;
        }
    }
    @else if $breakpoint == "medium" {
        @media screen and (min-width: $media__medium) and (max-width: $media__large - 1 ) {
            @content;
        }
    }
    @else if $breakpoint == "large" {
        @media screen and (min-width: $media__large ) and (max-width: $media__xlarge - 1) {
            @content;
        }
    }
    @else if $breakpoint == "xlarge" {
        @media screen and (min-width: $media__xlarge ) {
            @content;
        }
    }
    @else {
        @error "Meida mixin only allows xsmall, small, medium, large or xlarge as arguements";
    }
}

// Grid config
$grid__column-count : 16;
$grid__gutter-width : 10px;
$grid__column-width : 70px;

// Function
@function gridContext($g-col-count, $g-col-w, $g-gutter-w) {
    $g-context: ( $g-col-count * $g-col-w ) + ( $g-col-count * ( $g-gutter-w - 1 ) );
    @return $g-context;
}


//Grid System for media queries
$sizes : (xsmall, small, medium, large);

.grid__container {
    width: 100%;
}

// Non-media based grid
@for $i from 1 through $grid__column-count {
    $context: gridContext($grid__column-count, $grid__column-width, $grid__gutter-width);
    $target: ( $i * $grid__column-width ) + ( $i * ( $grid__gutter-width - 1 ) );
    %grid__col--#{$i} {
        width: percentage($target/$context)!important;
    }
    .grid__col--#{$i} {
        @extend %grid__col--#{$i};
    }
}
.alpha {
    float: left;
    margin-left: 0;
}

.omega {
    float: right;
    margin-left: 0;
    margin-right: 0;
}

// Media based grid

$sizes : (xsmall, small, medium, large, xlarge);

@each $size in $sizes {
    @include media($size) {
        @for $i from 1 through $grid__column-count {
            $context: gridContext($grid__column-count, $grid__column-width, $grid__gutter-width);
            $target: ( $i * $grid__column-width ) + ( $i * ( $grid__gutter-width - 1 ) );
            %#{$size}__col--#{$i} {
                width: percentage($target/$context)!important;
            }
            .#{$size}__col--#{$i} {
                @extend %#{$size}__col--#{$i};
            }
        }
        .#{$size}__alpha {
            float: left;
            margin-left: 0;
        }

        .#{$size}__omega {
            float: right;
            margin-left: 0;
            margin-right: 0;
        }
    }   
}

And this glorious beast outputs this:

.grid__container {
  width: 100%; }

.grid__col--1 {
  width: 6.25% !important; }

.grid__col--2 {
  width: 12.5% !important; }

.grid__col--3 {
  width: 18.75% !important; }

.grid__col--4 {
  width: 25% !important; }

.grid__col--5 {
  width: 31.25% !important; }

.grid__col--6 {
  width: 37.5% !important; }

.grid__col--7 {
  width: 43.75% !important; }

.grid__col--8 {
  width: 50% !important; }

.grid__col--9 {
  width: 56.25% !important; }

.grid__col--10 {
  width: 62.5% !important; }

.grid__col--11 {
  width: 68.75% !important; }

.grid__col--12 {
  width: 75% !important; }

.grid__col--13 {
  width: 81.25% !important; }

.grid__col--14 {
  width: 87.5% !important; }

.grid__col--15 {
  width: 93.75% !important; }

.grid__col--16 {
  width: 100% !important; }

.alpha {
  float: left;
  margin-left: 0; }

.omega {
  float: right;
  margin-left: 0;
  margin-right: 0; }

@media screen and (min-width: 1px) and (max-width: 479px) {
  .xsmall__col--1 {
    width: 6.25% !important; }

  .xsmall__col--2 {
    width: 12.5% !important; }

  .xsmall__col--3 {
    width: 18.75% !important; }

  .xsmall__col--4 {
    width: 25% !important; }

  .xsmall__col--5 {
    width: 31.25% !important; }

  .xsmall__col--6 {
    width: 37.5% !important; }

  .xsmall__col--7 {
    width: 43.75% !important; }

  .xsmall__col--8 {
    width: 50% !important; }

  .xsmall__col--9 {
    width: 56.25% !important; }

  .xsmall__col--10 {
    width: 62.5% !important; }

  .xsmall__col--11 {
    width: 68.75% !important; }

  .xsmall__col--12 {
    width: 75% !important; }

  .xsmall__col--13 {
    width: 81.25% !important; }

  .xsmall__col--14 {
    width: 87.5% !important; }

  .xsmall__col--15 {
    width: 93.75% !important; }

  .xsmall__col--16 {
    width: 100% !important; }

  .xsmall__alpha {
    float: left;
    margin-left: 0; }

  .xsmall__omega {
    float: right;
    margin-left: 0;
    margin-right: 0; } }
@media screen and (min-width: 480px) and (max-width: 767px) {
  .small__col--1 {
    width: 6.25% !important; }

  .small__col--2 {
    width: 12.5% !important; }

  .small__col--3 {
    width: 18.75% !important; }

  .small__col--4 {
    width: 25% !important; }

  .small__col--5 {
    width: 31.25% !important; }

  .small__col--6 {
    width: 37.5% !important; }

  .small__col--7 {
    width: 43.75% !important; }

  .small__col--8 {
    width: 50% !important; }

  .small__col--9 {
    width: 56.25% !important; }

  .small__col--10 {
    width: 62.5% !important; }

  .small__col--11 {
    width: 68.75% !important; }

  .small__col--12 {
    width: 75% !important; }

  .small__col--13 {
    width: 81.25% !important; }

  .small__col--14 {
    width: 87.5% !important; }

  .small__col--15 {
    width: 93.75% !important; }

  .small__col--16 {
    width: 100% !important; }

  .small__alpha {
    float: left;
    margin-left: 0; }

  .small__omega {
    float: right;
    margin-left: 0;
    margin-right: 0; } }
@media screen and (min-width: 768px) and (max-width: 959px) {
  .medium__col--1 {
    width: 6.25% !important; }

  .medium__col--2 {
    width: 12.5% !important; }

  .medium__col--3 {
    width: 18.75% !important; }

  .medium__col--4 {
    width: 25% !important; }

  .medium__col--5 {
    width: 31.25% !important; }

  .medium__col--6 {
    width: 37.5% !important; }

  .medium__col--7 {
    width: 43.75% !important; }

  .medium__col--8 {
    width: 50% !important; }

  .medium__col--9 {
    width: 56.25% !important; }

  .medium__col--10 {
    width: 62.5% !important; }

  .medium__col--11 {
    width: 68.75% !important; }

  .medium__col--12 {
    width: 75% !important; }

  .medium__col--13 {
    width: 81.25% !important; }

  .medium__col--14 {
    width: 87.5% !important; }

  .medium__col--15 {
    width: 93.75% !important; }

  .medium__col--16 {
    width: 100% !important; }

  .medium__alpha {
    float: left;
    margin-left: 0; }

  .medium__omega {
    float: right;
    margin-left: 0;
    margin-right: 0; } }
@media screen and (min-width: 960px) and (max-width: 1079px) {
  .large__col--1 {
    width: 6.25% !important; }

  .large__col--2 {
    width: 12.5% !important; }

  .large__col--3 {
    width: 18.75% !important; }

  .large__col--4 {
    width: 25% !important; }

  .large__col--5 {
    width: 31.25% !important; }

  .large__col--6 {
    width: 37.5% !important; }

  .large__col--7 {
    width: 43.75% !important; }

  .large__col--8 {
    width: 50% !important; }

  .large__col--9 {
    width: 56.25% !important; }

  .large__col--10 {
    width: 62.5% !important; }

  .large__col--11 {
    width: 68.75% !important; }

  .large__col--12 {
    width: 75% !important; }

  .large__col--13 {
    width: 81.25% !important; }

  .large__col--14 {
    width: 87.5% !important; }

  .large__col--15 {
    width: 93.75% !important; }

  .large__col--16 {
    width: 100% !important; }

  .large__alpha {
    float: left;
    margin-left: 0; }

  .large__omega {
    float: right;
    margin-left: 0;
    margin-right: 0; } }
@media screen and (min-width: 1080px) {
  .xlarge__col--1 {
    width: 6.25% !important; }

  .xlarge__col--2 {
    width: 12.5% !important; }

  .xlarge__col--3 {
    width: 18.75% !important; }

  .xlarge__col--4 {
    width: 25% !important; }

  .xlarge__col--5 {
    width: 31.25% !important; }

  .xlarge__col--6 {
    width: 37.5% !important; }

  .xlarge__col--7 {
    width: 43.75% !important; }

  .xlarge__col--8 {
    width: 50% !important; }

  .xlarge__col--9 {
    width: 56.25% !important; }

  .xlarge__col--10 {
    width: 62.5% !important; }

  .xlarge__col--11 {
    width: 68.75% !important; }

  .xlarge__col--12 {
    width: 75% !important; }

  .xlarge__col--13 {
    width: 81.25% !important; }

  .xlarge__col--14 {
    width: 87.5% !important; }

  .xlarge__col--15 {
    width: 93.75% !important; }

  .xlarge__col--16 {
    width: 100% !important; }

  .xlarge__alpha {
    float: left;
    margin-left: 0; }

  .xlarge__omega {
    float: right;
    margin-left: 0;
    margin-right: 0; } }

Let me know what you think and feel free to use this for your own projects :)

The Alpha and Omega additional classes can be deemed unnecessary, but I think they also have their uses :)