body {
    text-align: center;
  }
  
  h3 {
    span {
      font-weight: normal;
    }
  }
  
  .btn-set {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }
  
  .button {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    max-width: 250px;
    margin: 50px 20px 0;
    padding: 20px;
    font-size: 12px;
    text-decoration: none;
    text-transform: uppercase;
    color: black;
    border: 3px solid black;
    font-weight: bold;
    letter-spacing: .5px;
    transition: all .15s ease;
  
    span {
      text-align: center;
    }
  
    small {
      color: #999;
    }
  
    svg * {
      fill: currentColor;
    }
  
    svg {
      padding-right: 10px;
    }
  
    &:hover,
    &:focus {
      background-color: black;
      color: #efefef;
    }
  }
  
  .android .txt-ios {
    display: none;
  }
  
  .ios .txt-android {
    display: none;
  }