body {
 font-family: Arial, sans-serif;
 margin: 0;
 padding: 20px;
}
header, footer {
 background-color: darkblue;
 color: white;
 text-align: center;
 padding: 15px;
}
nav a {
 color: white;
 margin: 0 8px;
}
h2 {
 color: darkblue;
}
.kartice {
 display: flex;
 gap: 10px;
}
.kartica {
 flex: 1;
 border: 1px solid gray;
 padding: 10px;
}
table {
 border-collapse: collapse;
 width: 100%;
}
th, td {
 border: 1px solid gray;
 padding: 8px;
}
th {
 background-color: darkblue;
 color: white;
}