body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 20px;
}
.container {
    max-width: 400px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: center;
}
.dice {
    font-size: 48px;
    margin: 10px;
}
#history {
    margin-top: 20px;
    text-align: left;
}