body {
     background-color: #F5E6D3;
     color: #333;
     font-family: Georgia, serif;
     line-height: 1.8;
     padding: 20px;
}

body.dark {
     background-color: #121212;
     color: #f5f5f5;
}

header input,
header button {
     margin: 5px;
     padding: 8px;
     font-size: 16px;
}

#menu {
     position: sticky;
     top: 0;
     background: rgba(255, 255, 255, 0.8);
     padding: 10px;
}

button {
     margin: 5px;
     padding: 5px 10px;
}

main {
     font-size: 18px;
     white-space: pre-wrap;
}