// Avatar

@mixin avatar($size, $radius) {
  display: inline-block;
  width: $size;
  height: $size;
  overflow: hidden;
  text-align: center;
  -webkit-border-radius: $radius;
  border-radius: $radius;

  img {
    width: 100%;
    height: 100%;
  }

  i {
    font-size: $size / 3 * 2;
    line-height: $size;
  }
  // Breakpoint viewport sizes and media queries.
  //
  // Breakpoints are defined as a map of (name: minimum width), order from small to large:
  //
  //    (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px)
  //
  // The map defined in the `$grid-breakpoints` global variable is used as the `$breakpoints` argument by default.

  // Name of the next breakpoint, or null for the last breakpoint.
  //
  //    >> breakpoint-next(sm)
  //    md
  //    >> breakpoint-next(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
  //    md
  //    >> breakpoint-next(sm, $breakpoint-names: (xs sm md lg xl))
  //    md
}
@function breakpoint-next($name, $breakpoints: $grid-breakpoints, $breakpoint-names: map-keys($breakpoints)) {
  $n: index($breakpoint-names, $name);

  @return if($n < length($breakpoint-names), nth($breakpoint-names, $n + 1), null);

  // Minimum breakpoint width. Null for the smallest (first) breakpoint.
  //
  //    >> breakpoint-min(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
  //    576px
}
@function breakpoint-min($name, $breakpoints: $grid-breakpoints) {
  $min: map-get($breakpoints, $name);

  @return if($min != 0, $min, null);

  // Maximum breakpoint width. Null for the largest (last) breakpoint.
  // The maximum value is calculated as the minimum of the next one less 0.1.
  //
  //    >> breakpoint-max(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
  //    767px
}
@function breakpoint-max($name, $breakpoints: $grid-breakpoints) {
  $next: breakpoint-next($name, $breakpoints);

  @return if($next, breakpoint-min($next, $breakpoints) - 0.0625em, null);

  // Returns a blank string if smallest breakpoint, otherwise returns the name with a dash infront.
  // Useful for making responsive utilities.
  //
  //    >> breakpoint-infix(xs, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
  //    ""  (Returns a blank string)
  //    >> breakpoint-infix(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
  //    "-sm"
}
@function breakpoint-infix($name, $breakpoints: $grid-breakpoints) {
  @return if(breakpoint-min($name, $breakpoints) == null, "", "-#{$name}");
}

// Media of at least the minimum breakpoint width. No query for the smallest breakpoint.
// Makes the @content apply to the given breakpoint and wider.
@mixin media-breakpoint-up($name, $breakpoints: $grid-breakpoints) {
  $min: breakpoint-min($name, $breakpoints);

  @if $min {
    @media (min-width: $min) {
      @content;
    }
  }@else {
    @content;
  }
}// Media of at most the maximum breakpoint width. No query for the largest breakpoint.
// Makes the @content apply to the given breakpoint and narrower.
@mixin media-breakpoint-down($name, $breakpoints: $grid-breakpoints) {
  $max: breakpoint-max($name, $breakpoints);

  @if $max {
    @media (max-width: $max) {
      @content;
    }
  }@else {
    @content;
  }
}// Media that spans multiple breakpoint widths.
// Makes the @content apply between the min and max breakpoints
@mixin media-breakpoint-between($lower, $upper, $breakpoints: $grid-breakpoints) {
  @include media-breakpoint-up($lower, $breakpoints) {
    @include media-breakpoint-down($upper, $breakpoints) {
      @content;
    }
    // Media between the breakpoint's minimum and maximum widths.
    // No minimum for the smallest breakpoint, and no maximum for the largest one.
    // Makes the @content apply only to the given breakpoint, not viewports any wider or narrower.
  }
}
@mixin media-breakpoint-only($name, $breakpoints: $grid-breakpoints) {
  @include media-breakpoint-between($name, $name, $breakpoints) {
    @content;
  }
}
