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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <div>
<button class="button  button--small  button--default">Small button</button>
<button class="button  button--small  button--success">Small success button</button>
<button class="button  button--small  button--warning">Small warning button</button>
<button class="button  button--small  button--danger">Small danger button</button>
<button class="button  button--small  button--info">Small info button</button>
</div>

<div>
<button class="button  button--default">Medium button</button>
<button class="button  button--success">Medium success button</button>
<button class="button  button--warning">Medium warning button</button>
<button class="button  button--danger">Medium danger button</button>
<button class="button  button--info">Medium info button</button>
</div>

<div>
<button class="button  button--large  button--default">Large button</button>
<button class="button  button--large  button--success">Large success button</button>
<button class="button  button--large  button--warning">Large warning button</button>
<button class="button  button--large  button--danger">Large danger button</button>
<button class="button  button--large  button--info">Large info button</button>
</div>

<button class="button  button--default  button--bold">Bold button</button>
<button class="button  button--default  button--upper">Uppercase button</button>

<button class="button  button--default  button--block">Block button</button>
            
          
!
            
              @import "compass/css3";

// Configuration
$btn-name: 'button' !default;
$btn-hover: lighten 10% !default;
$btn-border:  darken 10% !default; // Set to false for no border
$btn-size-ratio: 1.2 !default;
$btn-schemes: (
  default: #7f8c8d,
  success: #27ae60,
  danger:  #c0392b,
  warning: #f1c40f,
  info:    #2980b9
) !default;

// Color helper 
// 1. Background-color
// 2. On hover
// 3. Border-color
@mixin button-color($color) {
  $everything-okay: true;
  
  // Making sure $color is a color
  @if type-of($color) != color {
    @warn "`#{$color}` is not a color for `button-color`";
    $everything-okay: false;  
  }
  
  // Making sure $btn-hover and $btn-border are 2 items long
  @if length($btn-hover) != 2 
   or length($btn-border) != 2 {
    @warn "Both `$btn-hover` and `$btn-border` should be two items long for `button-color`.";
    $everything-okay: false;  
  }
  
  // Making sure first items from $btn-hover and $btn-border are valid functions
  @if not function-exists(nth($btn-hover, 1)) 
   or not function-exists(nth($btn-border, 1)) {
    @warn "Either `#{nth($btn-hover, 1)}` or `#{nth($btn-border, 1)}` is not a valid function for `button-color`.";
    $everything-okay: false;  
  }
  
  // Making sure second items from $btn-hover and $btn-border are percentages
  @if type-of(nth($btn-hover, 2)) != number 
   or type-of(nth($btn-border, 2)) != number {
    @warn "Either `#{nth($btn-hover, 2)}` or `#{nth($btn-border, 2)}` is not a valid percentage for `button-color`.";
    $everything-okay: false;  
  }
  
  // If there is no mistake
  @if $everything-okay == true {
    background-color: $color; // 1
  
    &:hover,
    &:active { // 2
      background: call(nth($btn-hover, 1), $color, nth($btn-hover, 2));
    }  
  
    @if $btn-border != false { // 3
      border-color: call(nth($btn-border, 1), $color, nth($btn-border, 2));
    }
  }
}

// Default class
// 1. Border or not border?
// 2. Large modifier
// 3. Small modifier
// 4. Bold modifier
// 5. Block modifier
// 6. Uppercase modifier
// 7. Color themes modifier
.#{$btn-name} {
  // Default styles
  padding: .5em;
  margin-bottom: 1em;
  color: #fff;
  transition: background .15s;
  box-shadow: inset 0 1px rgba(255, 255, 255, .2);
  border-radius: .15em;
  border: if($btn-border != false, 1px solid, none); // 1
  
  // Modifiers
  &--large { // 2
    font-size: 1em * $btn-size-ratio;
  }
  
  &--small { // 3
    font-size: 1em / $btn-size-ratio;
  }

  &--bold { // 4
    font-weight: bold;
  }
  
  &--block { // 5
    display: block;
    width: 100%;
  }  
  
  &--upper { // 6
    text-transform: uppercase;
  }
  
  @each $key, $value in $btn-schemes { // 7
    &--#{$key} {
      @include button-color($value);
    }
  }
}

// Demo
body {
  padding: 1em;
}
            
          
!
999px
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