body {
    font-family: Georgia, serif;
    margin: 0;
    padding: 0;
}

#baner {
    background-color: DodgerBlue;
    color: white;
    padding: 10px;
    text-align: center;
}

#glowny {
    background-color: LightBlue;
    padding: 100px;
}

#lewy {
    background-color: DodgerBlue;
    color: white;
    width: 20%;
    height: 220px;
    float: left;
}

#srodkowy, #prawy {
    background-color: DodgerBlue;
    color: white;
    width: 40%;
    height: 220px;
    text-align: center;
    float: left;
}

a {
    border: 1px dashed DimGray;
    color: DarkRed;
    background-color: Gold;
    padding: 10px;
    text-decoration: none;
    display: inline-block;
    margin-top: 10px;
}