* {
    font-family: 'Georgia';
}

header {
    background-color: Navy;
    color: white;
    text-align: center;
    height: 100px;
    width: 50%;
    float: left;
}

nav {
    clear: both;
    background-color: Navy;
    padding: 20px;
}

.radio-label {
    color: Silver;
    margin: 50px;
}

.radio-label:hover {
    color: white;
    text-decoration: underline;
}

#lewy, #prawy {
    background-color: Azure;
    height: 550px;
    float: left;
    overflow: auto;
}

#lewy {
    width: 70%;
}

#prawy {
    width: 30%;
}

footer {
    clear: both;
    background-color: Navy;
    color: white;
}

table {
    border: 1px solid Navy;
    margin: auto;
    width: 70%;
}

tr:hover {
    background-color: SkyBlue;
}

#prawy img {
    width: 90%;
}