home-assistant.io/sass/oscailte/helpers/_classes.scss

.pull-left {
  float: left;
}
.pull-right {
  float: right;
}

.clearfix {
  *zoom: 1;
  &::before,
  &::after {
    display: table;
    content: "";
    line-height: 0;
  }
  &::after {
    clear: both;
  }
}

ul,
ol {
  &.unstyled {
    list-style-type: none;
    margin: 0;
  }

  &.inline {
    @extend .unstyled;
    list-style-type: none;
    > li {
      display: inline;
    }
  }

  &.divided {
    @extend .unstyled;
    > li {
      border-top: 1px solid lighten($site-background, 5%);
      border-bottom: 1px solid darken($site-background, 5%);
      padding: 0.5em 0;

      &:first-child {
        border-top: none;
        padding-top: 0;
      }
      &:last-child {
        border-bottom: none;
      }
    }
  }
}

.btn {
  @include gradient-vertical;
  @include box-shadow(0 0 3px rgba(0, 0, 0, 0.25));
  border-radius: 3px;
  color: $button-text;
  display: inline-block;
  padding: 7px 15px;
  text-decoration: none;
  text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.25);
  &:hover {
    text-decoration: underline;
  }
  &:visited {
    color: $button-text;
  }
}

/**
 * These buttons will fill the entirety of their container.
 *
 * 1. Remove padding so that widths and paddings don’t conflict.
 */
.btn--full {
  width: 100%;
  padding-right: 0; /* [1] */
  padding-left: 0; /* [1] */
  text-align: center;
}