html, body {
  height: 100%; 
}

body {
  margin: 0;
  width: 100%;  
  height: 100%;  
  background: white;
  color: black;
}

table.Container {
 height: 100%;  
  text-align: center;
  border: 0;   
}
/* przewijanie */


.tresc {
position: relative; left: 10%;
margin-top: 20px;
margin-bottom: 30px;
width: 650px;
font-family: sans-serif;
font-size: x-small;
color: #545D62;
text-align: justify;
}


.tresc1 {
margin-top: 20px;
margin-bottom: 30px;
margin-left: 160px;
margin-right: 160px;
font-family: sans-serif;
font-size: x-small;
color: #545D62;
text-align: center;
}