body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    padding: 0 20px;
  transition: background-color 1s;
  animation: bgChange 13s infinite alternate;
}
@keyframes bgChange {
        0% { background:#011F65; }
        25%{ background:#0a3990;}
       50%{background:#042045 ;}
        75%{ background:#1A3F75 ;}
        100% { background:#4fa1eb; }
    }

.game-container {
    text-align: center;
    background: #f5f5f5;
    padding: 20px;
    border-radius: 10px;
    box-shadow:0 0 20px cyan ;
    width: 90%; 
    max-width: 400px;
    border: 5px solid black;
}


h1 {
   font-family: "Kavoon", serif;
    font-size: 50px;
    margin-bottom: 10px;
    color: #333;
      text-shadow: 10px 10px 5px #164E7E ;
}
.zoom {
  animation: zoomIn 3.0s ease-in-out;
}

@keyframes zoomIn {
  from { transform: scale(0); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}
p {
    font-size: 16px;
    margin: 10px 0;
      text-shadow: 10px 10px 5px grey ;
    font-family: "Kavoon", serif;
}

input {
    width:80%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    box-shadow:10px 10px 5px rgb(118, 188, 235) ;
     border: 3px solid black;
}


button {
   font-family: "Kavoon", serif;
   background:rgb(206, 198, 198);
    color: black;
    border: 4px solid black;
    padding: 10px 20px;
    font-size: 20px;
    cursor: pointer;
    border-radius: 5px;
    transition: 0.3s;
    width: 100%; 
    margin-top: 10px;
    box-shadow:10px 10px 5px rgb(118, 188, 235) ;
}

button:hover {
    background: #0e3558;
    color: white;
}

#result {
    margin-top: 15px;
    font-size: 16px;
    color: #555;
}

@media (min-width: 600px) {
    button {
        width: auto;
    }
}