body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
    width: 20rem;
}

h1 {
    margin-bottom: 20px;
}

.calculator {
    margin-bottom: 20px;
}

input {
    width: 200px;
    padding: 10px;
    margin-right: 10px;
    overflow-x: auto;
}

textarea {
    width: 100%;
    max-width: 300px;
    padding: 10px;
    margin-bottom: 10px;
    resize: none;
    border: 1px solid #cccccc;
    border-radius: 5px;
    font-size: 16px;
}

button {
    padding: 10px 20px;
}

.game-info {
    margin-top: 20px;
}

#message {
    margin-bottom: 10px;
}

.leaderboard {
    margin-top: 30px;
}

#leaderboard-list {
    list-style-type: none;
    padding: 0;
}

#leaderboard-list li {
    background-color: #ececec;
    margin: 5px 0;
    padding: 10px;
    border-radius: 5px;
}