bootstrap grid standalone

gistfile1.less

//
// Grid system
// --------------------------------------------------


//## Define your custom responsive grid.

//** Number of columns in the grid.
@grid-columns:              12;
//** Padding between columns. Gets divided in half for the left and right.
@grid-gutter-width:         30px;
// Navbar collapse
//** Point at which the navbar becomes uncollapsed.
@grid-float-breakpoint:     @screen-sm-min;
//** Point at which the navbar begins collapsing.
@grid-float-breakpoint-max: (@grid-float-breakpoint - 1);


//== Container sizes
//
//## Define the maximum width of `.container` for different screen sizes.

// Small screen / tablet
@container-tablet:             ((720px + @grid-gutter-width));
//** For `@screen-sm-min` and up.
@container-sm:                 @container-tablet;

// Medium screen / desktop
@container-desktop:            ((940px + @grid-gutter-width));
//** For `@screen-md-min` and up.
@container-md:                 @container-desktop;

// Large screen / wide desktop
@container-large-desktop:      ((1140px + @grid-gutter-width));
//** For `@screen-lg-min` and up.
@container-lg:                 @container-large-desktop;




//== Media queries breakpoints
//
//## Define the breakpoints at which your layout will change, adapting to different screen sizes.

// Extra small screen / phone
//** Deprecated `@screen-xs` as of v3.0.1
@screen-xs:                  480px;
//** Deprecated `@screen-xs-min` as of v3.2.0
@screen-xs-min:              @screen-xs;
//** Deprecated `@screen-phone` as of v3.0.1
@screen-phone:               @screen-xs-min;

// Small screen / tablet
//** Deprecated `@screen-sm` as of v3.0.1
@screen-sm:                  768px;
@screen-sm-min:              @screen-sm;
//** Deprecated `@screen-tablet` as of v3.0.1
@screen-tablet:              @screen-sm-min;

// Medium screen / desktop
//** Deprecated `@screen-md` as of v3.0.1
@screen-md:                  992px;
@screen-md-min:              @screen-md;
//** Deprecated `@screen-desktop` as of v3.0.1
@screen-desktop:             @screen-md-min;

// Large screen / wide desktop
//** Deprecated `@screen-lg` as of v3.0.1
@screen-lg:                  1200px;
@screen-lg-min:              @screen-lg;
//** Deprecated `@screen-lg-desktop` as of v3.0.1
@screen-lg-desktop:          @screen-lg-min;

// So media queries don't overlap when required, provide a maximum
@screen-xs-max:              (@screen-sm-min - 1);
@screen-sm-max:              (@screen-md-min - 1);
@screen-md-max:              (@screen-lg-min - 1);




// Container widths
//
// Set the container width, and override it for fixed navbars in media queries.

.container {
  .container-fixed();

  @media (min-width: @screen-sm-min) {
    width: @container-sm;
  }
  @media (min-width: @screen-md-min) {
    width: @container-md;
  }
  @media (min-width: @screen-lg-min) {
    width: @container-lg;
  }
}

// Framework grid generation
//
// Used only by Bootstrap to generate the correct number of grid classes given
// any value of `@grid-columns`.

.make-grid-columns() {
  // Common styles for all sizes of grid columns, widths 1-12
  .col(@index) when (@index = 1) { // initial
    @item: ~".col-xs-@{index}, .col-sm-@{index}, .col-md-@{index}, .col-lg-@{index}";
    .col((@index + 1), @item);
  }
  .col(@index, @list) when (@index =< @grid-columns) { // general; "=<" isn't a typo
    @item: ~".col-xs-@{index}, .col-sm-@{index}, .col-md-@{index}, .col-lg-@{index}";
    .col((@index + 1), ~"@{list}, @{item}");
  }
  .col(@index, @list) when (@index > @grid-columns) { // terminal
    @{list} {
      position: relative;
      // Prevent columns from collapsing when empty
      min-height: 1px;
      // Inner gutter via padding
      padding-left:  (@grid-gutter-width / 2);
      padding-right: (@grid-gutter-width / 2);
    }
  }
  .col(1); // kickstart it
}

.float-grid-columns(@class) {
  .col(@index) when (@index = 1) { // initial
    @item: ~".col-@{class}-@{index}";
    .col((@index + 1), @item);
  }
  .col(@index, @list) when (@index =< @grid-columns) { // general
    @item: ~".col-@{class}-@{index}";
    .col((@index + 1), ~"@{list}, @{item}");
  }
  .col(@index, @list) when (@index > @grid-columns) { // terminal
    @{list} {
      float: left;
    }
  }
  .col(1); // kickstart it
}

.calc-grid-column(@index, @class, @type) when (@type = width) and (@index > 0) {
  .col-@{class}-@{index} {
    width: percentage((@index / @grid-columns));
  }
}
.calc-grid-column(@index, @class, @type) when (@type = push) and (@index > 0) {
  .col-@{class}-push-@{index} {
    left: percentage((@index / @grid-columns));
  }
}
.calc-grid-column(@index, @class, @type) when (@type = push) and (@index = 0) {
  .col-@{class}-push-0 {
    left: auto;
  }
}
.calc-grid-column(@index, @class, @type) when (@type = pull) and (@index > 0) {
  .col-@{class}-pull-@{index} {
    right: percentage((@index / @grid-columns));
  }
}
.calc-grid-column(@index, @class, @type) when (@type = pull) and (@index = 0) {
  .col-@{class}-pull-0 {
    right: auto;
  }
}
.calc-grid-column(@index, @class, @type) when (@type = offset) {
  .col-@{class}-offset-@{index} {
    margin-left: percentage((@index / @grid-columns));
  }
}

// Basic looping in LESS
.loop-grid-columns(@index, @class, @type) when (@index >= 0) {
  .calc-grid-column(@index, @class, @type);
  // next iteration
  .loop-grid-columns((@index - 1), @class, @type);
}

// Create grid for specific class
.make-grid(@class) {
  .float-grid-columns(@class);
  .loop-grid-columns(@grid-columns, @class, width);
  .loop-grid-columns(@grid-columns, @class, pull);
  .loop-grid-columns(@grid-columns, @class, push);
  .loop-grid-columns(@grid-columns, @class, offset);
}

// Generate semantic grid columns with these mixins.

// Centered container element
.container-fixed(@gutter: @grid-gutter-width) {
  margin-right: auto;
  margin-left: auto;
  padding-left:  (@gutter / 2);
  padding-right: (@gutter / 2);
  &:extend(.clearfix all);
}

// Creates a wrapper for a series of columns
.make-row(@gutter: @grid-gutter-width) {
  margin-left:  (@gutter / -2);
  margin-right: (@gutter / -2);
  &:extend(.clearfix all);
}

// Generate the extra small columns
.make-xs-column(@columns; @gutter: @grid-gutter-width) {
  position: relative;
  float: left;
  width: percentage((@columns / @grid-columns));
  min-height: 1px;
  padding-left:  (@gutter / 2);
  padding-right: (@gutter / 2);
}
.make-xs-column-offset(@columns) {
  margin-left: percentage((@columns / @grid-columns));
}
.make-xs-column-push(@columns) {
  left: percentage((@columns / @grid-columns));
}
.make-xs-column-pull(@columns) {
  right: percentage((@columns / @grid-columns));
}

// Generate the small columns
.make-sm-column(@columns; @gutter: @grid-gutter-width) {
  position: relative;
  min-height: 1px;
  padding-left:  (@gutter / 2);
  padding-right: (@gutter / 2);

  @media (min-width: @screen-sm-min) {
    float: left;
    width: percentage((@columns / @grid-columns));
  }
}
.make-sm-column-offset(@columns) {
  @media (min-width: @screen-sm-min) {
    margin-left: percentage((@columns / @grid-columns));
  }
}
.make-sm-column-push(@columns) {
  @media (min-width: @screen-sm-min) {
    left: percentage((@columns / @grid-columns));
  }
}
.make-sm-column-pull(@columns) {
  @media (min-width: @screen-sm-min) {
    right: percentage((@columns / @grid-columns));
  }
}

// Generate the medium columns
.make-md-column(@columns; @gutter: @grid-gutter-width) {
  position: relative;
  min-height: 1px;
  padding-left:  (@gutter / 2);
  padding-right: (@gutter / 2);

  @media (min-width: @screen-md-min) {
    float: left;
    width: percentage((@columns / @grid-columns));
  }
}
.make-md-column-offset(@columns) {
  @media (min-width: @screen-md-min) {
    margin-left: percentage((@columns / @grid-columns));
  }
}
.make-md-column-push(@columns) {
  @media (min-width: @screen-md-min) {
    left: percentage((@columns / @grid-columns));
  }
}
.make-md-column-pull(@columns) {
  @media (min-width: @screen-md-min) {
    right: percentage((@columns / @grid-columns));
  }
}

// Generate the large columns
.make-lg-column(@columns; @gutter: @grid-gutter-width) {
  position: relative;
  min-height: 1px;
  padding-left:  (@gutter / 2);
  padding-right: (@gutter / 2);

  @media (min-width: @screen-lg-min) {
    float: left;
    width: percentage((@columns / @grid-columns));
  }
}
.make-lg-column-offset(@columns) {
  @media (min-width: @screen-lg-min) {
    margin-left: percentage((@columns / @grid-columns));
  }
}
.make-lg-column-push(@columns) {
  @media (min-width: @screen-lg-min) {
    left: percentage((@columns / @grid-columns));
  }
}
.make-lg-column-pull(@columns) {
  @media (min-width: @screen-lg-min) {
    right: percentage((@columns / @grid-columns));
  }
}



// Fluid container
//
// Utilizes the mixin meant for fixed width containers, but without any defined
// width for fluid, full width layouts.

.container-fluid {
  .container-fixed();
}


// Row
//
// Rows contain and clear the floats of your columns.

.row {
  .make-row();
}


// Columns
//
// Common styles for small and large grid columns

.make-grid-columns();


// Extra small grid
//
// Columns, offsets, pushes, and pulls for extra small devices like
// smartphones.

.make-grid(xs);


// Small grid
//
// Columns, offsets, pushes, and pulls for the small device range, from phones
// to tablets.

@media (min-width: @screen-sm-min) {
  .make-grid(sm);
}


// Medium grid
//
// Columns, offsets, pushes, and pulls for the desktop device range.

@media (min-width: @screen-md-min) {
  .make-grid(md);
}


// Large grid
//
// Columns, offsets, pushes, and pulls for the large desktop device range.

@media (min-width: @screen-lg-min) {
  .make-grid(lg);
}