* {
    box-sizing: border-box;
  }
  
  html {
    font-size: 62.5%;
    line-height: 1.4;
  }
  
  html,
  body {
    height: 100%;
    min-height: 100%;
    font-family: Roboto, sans-serif;
  }
  
  main {
    padding-top: 300px;
    font-family: arial;
    background: #eee;
    min-height: 10%;
  }
  
  .app-header {
    display: block;
    background: #3f51b5;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    color: #fff;
    height: 300px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0);
  }
  
  .header-content {
    position: relative;
    height: 100%;
    width: 100%;
  }
  
  .app-toolbar {
    display: flex;
    flex-direction: row;
    align-items: center;
    position: relative;
    height: 64px;
    padding: 0 16px;
    pointer-events: none;
    font-size: 20px;
  }
  
  #large-toolbar {
    text-align: center;
    bottom: 0;
    transform-origin: left top;
    margin-bottom: 24px;
    margin-bottom: 16px;
    width: 100%;
  }
  
  .small-title,
  .large-title {
    transform-origin: left top;
    white-space: nowrap;
    flex: 1;
    flex-basis: 1e-9px;
    overflow: hidden;
    font-weight: 400;
    line-height: 1.5;
    position: relative;
  }
  
  .small-title {
    margin-left: 14px;
    opacity: 0;
  }
  
  .large-title {
    will-change: transform, opacity;
    font-size: 56px;
    font-size: 2em;
    margin-left: 64px;
  }
  
  .icon-button {
    display: inline-block;
    position: relative;
    padding: 6px;
    outline: none;
    -webkit-user-select: none;
       -moz-user-select: none;
        -ms-user-select: none;
            user-select: none;
    font-size: 0;
    line-height: 1;
    width: 40px;
    height: 40px;
    box-sizing: border-box !important;
  }
  .icon-button .icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    vertical-align: middle;
    fill: currentcolor;
    stroke: none;
    width: 100%;
    height: 100%;
  }
  
  .background-container {
    position: absolute;
    overflow: hidden;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
  }
  
  .background {
    pointer-events: none;
    position: absolute;
    background-size: cover;
    height: 100%;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    will-change: transform, opacity;
  }
  
  #background-back {
    background-image: url("images/fondo-bg.jpg");
    background-position: left center;
    opacity: 0;
  }
  
  #background-front {
    background-image: linear-gradient(rgb(61, 110, 214), rgba(82, 65, 158, 0.774), rgb(3, 27, 3));
    background-position: left center;
  }
  
  .card {
    padding: 16px;
    margin: 24px;
    border-radius: 2px;
    background-color: #fff;
    color: rgba(0, 0, 0, 0.87);
    box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 1px 5px 0 rgba(0, 0, 0, 0.12), 0 3px 1px -2px rgba(0, 0, 0, 0.2);
  }
  .card .card-title {
    padding: 24px 16px 8px;
    font-size: 24px;
    font-weight: 400;
    line-height: 32px;
  }
  .card p {
    font-size: 1.6rem;
    font-weight: 400;
    letter-spacing: 0.01em;
    line-height: 1.6em;
    padding: 0 16px;
  }

  .whatsapp{
    position: fixed;
    right: 20px;
    top: 180px;
    height: 42px;
    width: 70px;
  }

  @media only screen and (max-width: 600px) {
    .small-title,
    .large-title {
      transform-origin: left top;
      white-space: nowrap;
      flex: 1;
      flex-basis: 1e-9px;
      overflow: hidden;
      font-weight: 200;
      line-height: 1.5;
      position: relative;
    }
    
    .small-title {
      margin-left: 34px;
      opacity: 0;
    }
  
  .large-title {
    will-change: transform, opacity;
    font-size: 26px;
    font-size: 1em;
    margin-left: 1px;
  }
  .header-logo {
    display: inline-block;
    position: absolute;
    margin: 0;
    padding: 0;
    left: 160px;
    top: 50%;
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
    z-index: 501;
  }
    .header-logo a {
      right: 100px;
      align-content: center;
      text-align: center;
      align-items: center;
      width: 80px;
  }
  .whatsapp{
    right: 330px;
    align-content: center;
    text-align: center;
    align-items: center;
    width: 40px;
    top: 4%;
  }
  .whatsapp b {
    display: none;
  }

}