body {
background-color: #f2f2f2;
font-family: Arial, sans-serif;
}

h1 {
text-align: center;
}

.score-container {
text-align: center;
margin-top: 30px;
}

.button-container {
display: flex;
justify-content: center;
margin-top: 20px;
}

button {
font-size: 20px;
background-color: #ffffff;
border: 2px solid #cccccc;
border-radius: 5px;
padding: 10px 20px;
margin: 0 10px;
}

button:hover {
background-color: #cccccc;
}

button:disabled {
opacity: 0.5;
cursor: not-allowed;
}

.round-container {
text-align: center;
margin-top: 30px;
}

.input-container {
text-align: center;
margin-top: 20px;
}

input[type="number"] {
font-size: 16px;
padding: 5px;
margin-right: 10px;
border-radius: 5px;
border: 2px solid #cccccc;
}

#play-again {
font-size: 16px;
background-color: #ffffff;
border: 2px solid #cccccc;
border-radius: 5px;
padding: 5px 10px;
margin-left: 10px;
cursor: pointer;
}

#play-again:hover {
background-color: #cccccc;
}