body {
    background: linear-gradient(135deg, #0f3460 0%, #16a085 100%);
    min-height: 100vh;
    margin: 0;
    font-family: 'Arial', sans-serif;
}

.container {
    border: none;
    width: auto;
    height: auto;
    background-color: #1a1a1a;
    color: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);

}

button {
    background-color: #333333;
    border: 2px solid #555555;
    border-radius: 10px;
    width: 70px;
    height: 70px;
    text-align: center;
    padding: 10px;
    margin: 8px;
    color: #ffffff;
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s ease;
}

button:hover {
    background-color: #444444;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
    transform: translateY(-2px);
}

button:active {
    transform: translateY(0);
}

.orange {
    background-color: #16a085;
    border-color: #138d73;
    color: white;
    font-weight: bold;
}

.orange:hover {
    background-color: #138d73;
}

.box {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

p {
    font-size: 1.8rem;
    font-family: 'Arial', sans-serif;
    color: white;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    font-weight: bold;
}

#userInput {
    background-color: #222222;
    border: 2px solid #16a085;
    border-radius: 8px;
    color: #16a085;
    font-size: 2rem;
    padding: 16px;
    width: 260px;
    margin-bottom: 20px;
    text-align: right;
    font-weight: bold;
}