barebones/scss/generic/_mixins.scss

/*
 * Media query to respond to a minimum size (mobile first)
 */

@mixin resp-min($size) {
  @media screen and (min-width: $size) { 
    @content; 
  }
}


/*
 * Media query to respond to a maximum size
 */

@mixin resp-max($size) {
  @media screen and (max-width: $size) { 
    @content; 
  }
}


/*
 * Output font size in px/rem
 */

@mixin font-size($px) {
  font-size: $px + px;
  font-size: #{$px / $base-font-size}rem;
}


/*
 * Placeholder mixin for <input>
 */

@mixin placeholder {
  ::-webkit-input-placeholder {
    @content; 
  }
  :-moz-placeholder {
    @content; 
  }
  ::-moz-placeholder {
    @content; 
  }
  :-ms-input-placeholder {  
    @content; 
  }
}