body{
    background-image: url("img/shoe.png");
    background-repeat: no-repeat;
    background-size: cover;
}
body {
    font-family: Arial;
    font-size: 17px;
    padding: 8px;
  }
  
  * {
    box-sizing: border-box;
  }
  
  .row {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    margin: 0 -16px;
  }
  
  .col-25 {
    -ms-flex: 25%;
    flex: 25%;
  }
  
  .col-50 {
    -ms-flex: 50%;
    flex: 50%;
  }
  
  .col-75 {
    -ms-flex: 75%;
    flex: 75%;
  }
  
  .col-25,
  .col-50,
  .col-75 {
    padding: 0 16px;
  }
  
  .container {
    background-color: #f2f2f2;
    padding: 50px 20px 15px 20px;
    border: 1px solid lightgrey;
    border-radius: 3px;
  }
  
  input[type=text] {
    width: 100%;
    margin-bottom: 20px;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 3px;
  }
  
  label {
    margin-bottom: 10px;
    display: block;
  }
  
  .icon-container {
    margin-bottom: 20px;
    padding: 7px 0;
    font-size: 24px;
  }
  
  .btn {
    background-color: #4931d4;
    color: white;
    padding: 12px;
    margin: 10px 0;
    border: none;
    width: 100%;
    border-radius: 3px;
    cursor: pointer;
    font-size: 17px;
  }
  
  .btn:hover {
    background-color: #7bb3e0;
  }
  
  a {
    color: #2196F3;
  }
  h1{
    text-align: center;
    padding: 10px 10px;
    color: #f2f2f2;
  }
  hr {
    border: 1px solid lightgrey;
  }
  
  span.price {
    float: right;
    color: grey;
  }
  .alert {
    padding: 20px;
    background-color: #f44336;
    color: white;
  }
  
  .closebtn {
    margin-left: 15px;
    color: white;
    font-weight: bold;
    float: right;
    font-size: 22px;
    line-height: 20px;
    cursor: pointer;
    transition: 0.3s;
  }
  
  .closebtn:hover {
    color: black;
  }
  
  /* Responsive layout - when the screen is less than 800px wide, make the two columns stack on top of each other instead of next to each other (also change the direction - make the "cart" column go on top) */
  @media (max-width: 800px) {
    .row {
      flex-direction: column-reverse;
    }
    .col-25 {
      margin-bottom: 20px;
    }
  }