body {
margin: 0;
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
background: #8FD9FB;
font-family: Times New Roman;
color: white;
justify-content: center;
}

.main-box {
background: #122f4a;
padding: 25px;
border-radius: 16px;
text-align: center;
width: 720px;
}

pre {
font-family: monospace;
white-space: pre;
line-height: 1.2;
}

canvas {
display: block;
margin: 20px auto;
background-color: white;
border: 3px solid red;
}

.scoreboard {
line-height: 2;
background-color: black;
border: 3px solid gold;
}

input, button, select {
padding: 8px;
margin: 5px;
border-radius: 6px;
border: none;
}

button {
background: gold;
cursor: pointer;
}

#qrcode {
margin-top: 15px;
justify-content: center;
}

#qr-image {
margin-top: 10px;
justify-content: center; 
}