body{
      margin: 0px;
      padding: 0px;
      background-position: bottom right;
}

.tlo {
       width: 100%;
       height: 100%;
       margin: 0px;
       padding: 0px;
}

.tlo#opis {
}

.tlo#certyfikaty {
       background: url('./index/jpeg/tlo_certyfikaty.jpg') no-repeat;
       background-position: 100% 100%;
}