soapbox/app/styles/components/buttons.scss

button {
  font-family: inherit;
  cursor: pointer;

  &:focus {
    outline: none;
  }
}

.button {
  background-color: var(--brand-color);
  border: 10px none;
  border-radius: 4px;
  box-sizing: border-box;
  color: #fff;
  cursor: pointer;
  display: inline-block;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  height: 36px;
  letter-spacing: 0;
  line-height: 36px;
  overflow: hidden;
  padding: 0 16px;
  position: relative;
  text-align: center;
  text-decoration: none;
  text-overflow: ellipsis;
  white-space: nowrap;
  width: auto;
  transition: 0.2s;

  &:active,
  &:focus,
  &:hover {
    background-color: var(--brand-color--hicontrast);
  }

  &--destructive {
    transition: none;

    &:active,
    &:focus,
    &:hover {
      background-color: $error-red;
      transition: none;
    }
  }

  &--small {
    font-size: 13px;
    height: auto;
    line-height: normal;
    padding: 4px 8px;
  }

  &:disabled,
  &.disabled {
    background-color: var(--brand-color--med);
    cursor: default;
  }

  &::-moz-focus-inner {
    border: 0;
  }

  &::-moz-focus-inner,
  &:focus,
  &:active {
    outline: 0 !important;
  }

  &.button-alternative {
    color: #fff;
    background: var(--brand-color);

    &:active,
    &:focus,
    &:hover {
      background-color: var(--brand-color);
    }
  }

  &.button-alternative-2 {
    background: var(--accent-color);

    &:active,
    &:focus,
    &:hover {
      background-color: var(--accent-color--bright);
    }
  }

  &.button-secondary {
    color: var(--primary-text-color--faint);
    background: transparent;
    padding: 3px 15px;
    border: 1px solid var(--brand-color);

    &:active,
    &:focus,
    &:hover {
      border-color: var(--brand-color);
      color: var(--background-color);
    }

    &:disabled {
      opacity: 0.5;
    }

    i.fa {
      margin-right: 0.5em;
    }
  }

  &.button--block {
    display: block;
    width: 100%;
  }
}

button,
a.button {
  &.standard {

    // NOTE - will define the larger standard buttons here and apply class where used.

    &-small {
      @include font-size(11);
      @include line-height(11);
      @include font-weight(bold);
      height: 20px;
      padding: 5px 15px;
      border: 0;
      border-radius: 4px;
      text-transform: uppercase;
      color: #fff;
      background: #607cf5;
    }
  }

  i.fa {
    margin-right: 0.6em;
  }
}