body {
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica,
      Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
    margin: 0;
  }
  
  header {
    background: #039be5;
    padding: 1rem 5vw;
  }
  
  header a {
    color: #fff;
    font-weight: 800;
    text-decoration: none;
  }
  
  main {
    display: none;
    margin: auto;
    width: 90vw;
    margin-top: 10px;
  }
  
  #firebaseui-auth-container {
    font-weight: 800;
    margin: 4rem auto 6rem;
    max-width: 650px;
    width: 90vw;
  }
  
  footer {
    color: #444;
    font-size: 0.875rem;
    text-align: center;
  }
  
  footer a {
    color: inherit;
  }
  
  .products {
    
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(3, 1fr);
    margin-top: 3rem;
  }

  .product {
    border: 2px solid rgb(30, 115, 190);
    border-radius: 5px;
    padding: 10px;
  }

  .product h2 {
    margin-top: 0;
  }
  
  .product img {
    width: 300px;
  }
  
  .product input {
    border: 1px solid #039be5;
    border-radius: 0.25rem;
    font-size: 1.125rem;
    line-height: 1.25rem;
    padding: 0.25rem;
  }
  
  button {
    z-index: 8;
    font-family: Roboto;
    cursor: pointer;
    outline: none;
    box-shadow: none;
    box-sizing: border-box;
    visibility: visible;
    text-align: left;
    line-height: 17px;
    letter-spacing: 1px;
    font-weight: 500;
    font-size: 17px;
    border-color: rgba(255, 255, 255, 0);
    margin: 0px;
    border-radius: 3px;
    padding: 12px 30px;
    color: rgb(255, 255, 255);
    text-decoration: none;
    white-space: nowrap;
    width: auto;
    height: auto;
    min-height: 0px;
    min-width: 0px;
    max-height: none;
    max-width: none;
    background-color: rgb(30, 115, 190);
    opacity: 1;
    transform: matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    transform-origin: 50% 50% 0px;
    border-width: 0px;
    border-style: none;
  }
  
  button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
  }
  
  select {
    transition: box-shadow 0.2s ease;
    background: none;
    border: none;
    font-size: 1.25rem;
    border-bottom: 2px solid rgb(30, 115, 190);
  }
  
  label {
    display: block;
  }
  
  #subscribe,
  #my-subscription {
    display: none;
  }
  
  /* Test card number */
  .test-card-notice {
    display: block;
    margin-block-start: 1em;
    margin-block-end: 1em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
  }
  .card-number {
    display: inline;
    white-space: nowrap;
    font-family: Menlo, Consolas, monospace;
    color: #3c4257;
    font-weight: 500;
  }
  .card-number span {
    display: inline-block;
    width: 4px;
  }