html, body {
  background: #ffffff;
  text-align: center;
  width: 100%;
  height: 100%;
}


#strona_tlo {
  position: relative;
  margin: auto;
  width: 767px;
  height: 100%;
  background: #E3E3E3;
  height: 100%;
}
  
#bok_lewa {
  position: absolute;
  height: 100%;
  width: 206px;
  left: -1000px;
  background-image: url('../gfx/gradient_lewa.jpg');
  background-repeat: repeat-y;
  z-index: 1;
}


#bok_prawa {
  position: absolute;
  width: 206px;
  height: 100%;
  left: 50%;
  margin-left: 383px;
  background-image: url('../gfx/gradient_prawa.jpg');
  background-repeat: repeat-y;
  z-index: 1;
}

#strona {
  position: relative;
  width: 100%;
  text-align: center;
}

#glowna {
  position: relative;
  background: #E3E3E3;
  z-index: 200;
}

#gora {
  position: relative;
  width: 767px;
  line-height: 1px;
  font-size: 1px;
  z-index: 100;
}

#lewa {
  position: relative;
  width: 252px;
  float: left;
}

#przerwa {
  position: relative;
  width: 39px;
  float: left;
}

#srodek {
  position: relative;
  width: 476px;
  float: left;
}

#flaga {
  position: absolute;
  top: 270px;
  right: 6px;
  z-index: 100;
}