body {
    font-family: Arial, sans-serif;
    text-align: center;
    margin: 0;
    padding: 0;
}

h1 {
    color: #333;
    margin: 20px 0;
}

input {
    padding: 10px;
    width: 100%;
    max-width: 300px;
    box-sizing: border-box;
}

#guessSubmit {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    display: inline-block;
    margin: 10px 0;
    width: auto;
    transition: background-color 0.3s ease;
}

#guessSubmit:hover {
    background-color: #45a049;
}

/* For tablets and larger mobile devices */
@media (min-width: 600px) {
    input {
        width: 80%;
    }
}

/* For desktops and larger screens */
@media (min-width: 992px) {
    input {
        width: 50%;
    }
}