body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background-color: #333;
    color: #fff;
    padding: 1em;
    text-align: center;
}

odkaz {
    background-color: #FFFF66;
    color: #333333;
    padding: 1em;
    text-align: center;
}

main {
    display: flex;
    padding: 1em;
}

#uvod {
    flex: 2;
    padding-right: 1em;
}

#obsah {
    flex: 3;
    padding: 1em;
    background-color: #fff;
    border: 1px solid #ccc;
}

aside {
    width: 200px;
    padding: 1em;
    background-color: #eee;
    border: 1px solid #ccc;
}

#archiv ul {
    list-style: none;
    padding: 0;
}

#archiv li {
    margin-bottom: 0.5em;
}

#archiv a {
    text-decoration: none;
    color: #333;
    display: block;
    padding: 0.5em;
    border: 1px solid #ccc;
    background-color: #fff;
}

#archiv a:hover {
    background-color: #ddd;
}

footer {
    text-align: center;
    padding: 1em;
    background-color: #333;
    color: #fff;
}