Masto/app/javascript/flavours/glitch/styles/_mixins.scss

@mixin avatar-radius() {
  border-radius: $ui-avatar-border-size;
  background-position: 50%;
  background-clip: padding-box;
}

@mixin avatar-size($size: 48px) {
  width: $size;
  height: $size;
  background-size: $size $size;
}

@mixin single-column($media, $parent: "&") {
  .auto-columns #{$parent} {
    @media #{$media} {
      @content;
    }
  }
  .single-column #{$parent} {
    @content;
  }
}

@mixin limited-single-column($media, $parent: "&") {
  .auto-columns #{$parent},
  .single-column #{$parent} {
    @media #{$media} {
      @content;
    }
  }
}

@mixin multi-columns($media, $parent: "&") {
  .auto-columns #{$parent} {
    @media #{$media} {
      @content;
    }
  }
  .multi-columns #{$parent} {
    @content;
  }
}

@mixin fullwidth-gallery {
  &.full-width {
    margin-left: -15px;
    margin-right: -15px;
    width: calc(100% + 30px);
    max-width: none;
    border-radius: 0;
  }
}

@mixin search-input() {
  width: 100%;
  border: 1px solid var(--color-search-lines);
  border-radius: var(--drawer-border-radius);
  box-sizing: border-box;
  color: var(--color-search-fg);
  font-family: inherit;
  font-size: inherit;
  background: var(--color-search-bg);
}

@mixin search-popout() {
  background: $simple-background-color;
  border-radius: 4px;
  padding: 10px 14px;
  padding-bottom: 14px;
  margin-top: 10px;
  color: $light-text-color;
  box-shadow: 2px 4px 15px rgba($base-shadow-color, 0.4);

  h4 {
    text-transform: uppercase;
    color: $light-text-color;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 10px;
  }

  li {
    padding: 4px 0;
  }

  ul {
    margin-bottom: 10px;
  }

  em {
    font-weight: 500;
    color: $inverted-text-color;
  }
}