body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-color: #f4f4f4;
  }
  
  .locker-grid {
    display: grid;
    grid-template-columns: repeat(4, 100px);
    grid-gap: 10px;
  }
  
  .locker {
    width: 100px;
    height: 150px;
    background: url('locker.PNG') no-repeat center center / cover;
    border: none;
    color: white;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  
  /* Hover effect */
  .locker:hover {
    transform: scale(1.1); /* Slightly enlarge the button */
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.3); /* Add a shadow effect */
    background-color: rgba(255, 0, 0, 0.1); /* Add a subtle red overlay */
  }