metamask-extension/ui/app/css/itcss/components/hero-balance.scss

$break-small: 575px;
$break-medium: 780px;
$break-large: 576px;

.hero-balance {
  @media screen and (max-width: $break-small) {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    margin: 0.3em 0.9em 0.8em 0.9em;
  }

  @media screen and (min-width: $break-large) {
    display: flex;
    flex-direction: row;
    justify-content: flex-start;
    align-items: center;
    margin: 1.5em 0.9em 0.8em 0.9em;
  }

  .hero-balance-display {
    .fiat-amount {
      color: #A0A0A0;
      // TODO: colors
    }
    @media screen and (max-width: $break-small) {
      text-align: center;

      .token-amount {
        font-size: 1.8em;
        margin-top: 1em;
      }

      .fiat-amount {
        font-size: 1.1em;
        margin-top: 0.8em;
      }
    }

    @media screen and (min-width: $break-large) {
      flex-grow: 3;
      margin-left: 1.2vw;

      .token-amount {
        font-size: 2.1vw;

        @media screen and (max-width: $break-medium) {
          font-size: 3vw;
        }

      }

      .fiat-amount {
        font-size: 1.7vw;
        margin-top: 0.3em;

        @media screen and (max-width: $break-medium) {
          font-size: 2.5vw;
          margin-top: 0em;
        }

      }

    }

  }

  .hero-balance-icon {
    border-radius: 30px;
    // TODO: colors
    border: 1px solid #DEDEDE; 
    width: 5vw;
    height: 5vw;
    min-width: 45px;
    min-height: 45px;
    max-width: 65px;
    max-height: 65px;
  }

  .hero-balance-buttons {
    button.btn-clear {
      width: 81px;
      height: 32px;
      font-size: .7em;
      background: white;
      border: 1px solid;

      @media screen and (max-width: $break-small) {
        width: 100%;
        margin-top: 1.3em;
      }

      @media screen and (min-width: $break-large) {
        flex-grow: 2;
        width: 5.8vw;
        min-width: 75px;
        height: 4.2vh;
        min-height: 28px;
        font-size: .7em;
      }

    }

    @media screen and (max-width: $break-small) {
      width: 100%;
      margin-top: 1.3em;
    }

    @media screen and (min-width: $break-large) {
      flex-grow: 2;
    }

  }
}