mastodon/app/assets/stylesheets/components.scss

.button {
  background-color: #2b90d9;
  font-family: 'Roboto';
  display: inline-block;
  position: relative;
  box-sizing: border-box;
  text-align: center;
  border: 10px none;
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: uppercase;
  padding: 0 16px;
  height: 36px;
  cursor: pointer;
  line-height: 36px;
  border-radius: 4px;
  text-decoration: none;

  &:hover {
    background-color: #489fde;
  }

  &:disabled {
    background-color: #9baec8;
    cursor: default;
  }

  &.button-secondary {
    background-color: #282c37;

    &:hover {
      background-color: #282c37;
    }

    &:disabled {
      background-color: #9baec8;
    }
  }
}

.icon-button {
  color: #616b86;
  cursor: pointer;

  &:hover {
    color: #717b98;
  }

  &.disabled {
    color: #535b72;
    cursor: default;
  }

  &.active {
    color: #2b90d9;
  }
}

.compose-form__textarea, .follow-form__input {
  background: #fff;

  &:disabled {
    background: #d9e1e8;
  }
}

.status__content, .reply-indicator__content {
  font-size: 15px;
  line-height: 20px;
  word-wrap: break-word;
  font-weight: 300;

  p {
    margin-bottom: 20px;

    &:last-child {
      margin-bottom: 0;
    }
  }

  a {
    color: #d9e1e8;
    text-decoration: none;

    &:hover {
      text-decoration: underline;
    }

    &.mention {
      &:hover {
        text-decoration: none;

        span {
          text-decoration: underline;
        }
      }
    }
  }
}

.detailed-status {
  .status__content {
    font-size: 19px;
    line-height: 24px;
  }
}

.reply-indicator__content {
  color: #282c37;
  font-size: 14px;

  a {
    color: #535b72;
  }
}

.status__display-name, .status__relative-time, .detailed-status__display-name, .detailed-status__datetime {
  text-decoration: none;
}

.status__display-name {
  strong {
    color: #fff;
  }
}

.status__display-name, .reply-indicator__display-name, .detailed-status__display-name {
  &:hover {
    strong {
      text-decoration: underline;
    }
  }
}

.detailed-status__display-name {
  color: #d9e1e8;
  line-height: 24px;

  strong, span {
    display: block;
  }

  strong {
    font-size: 16px;
    color: #fff;
  }
}

.status__relative-time, .detailed-status__datetime {
  &:hover {
    text-decoration: underline;
  }
}

.transparent-background {
  background: image-url('void.png');
}

.dropdown {
  display: inline-block;
}

.dropdown__content {
  display: none;
  position: absolute;
}

.dropdown--active .dropdown__content {
  display: block;
  z-index: 9999;

  &:before {
    content: "";
    display: block;
    position: absolute;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 0 4.5px 7.8px 4.5px;
    border-color: transparent transparent #d9e1e8 transparent;
    top: -7px;
    left: 8px;
  }

  ul {
    list-style: none;
    background: #d9e1e8;
    padding: 4px 0;
    border-radius: 4px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.4);
    min-width: 100px;
  }

  a {
    font-size: 13px;
    display: block;
    padding: 6px 16px;
    width: 120px;
    text-decoration: none;
    background: #d9e1e8;
    color: #282c37;

    &:hover {
      background: #2b90d9;
      color: #d9e1e8;
    }
  }
}