body
{
    background-color: #ff0000;
}

#gora
{
    width: 100%;
    height: 200px;
    background-color: cyan;
    float: left;
}

#lewo
{
    width: 20%;
    background-color: crimson;
    height: 350px;
    float: left;
}

#prawo
{
    width: 20%;
    background-color: lime;
    min-height: 20px;
    float: left;
}
#srodek
{
    width: 60%;
    background-color: blue;
    height: 350px;
    float: left;
}
#dol
{
    width: 100%;
    height: 200px;
    background-color: cyan;
    float: left;
}

.synek
{
    width: 200px;
    height: 200px;
    float: left;
    background-color: magenta;
}