CSS

body{
  background-color: lightyellow;
  width:100%;
}


.body{
  position: absolute;
  left: 0px;
  top: 0px;
  border: 5px solid black;
  background-color: orange;
}

#naglowek1{
  font-weight: normal;
  color: green;
}

.akapit1{
  font-size: 34px;
}

.akapit2{
  font-size: 28px;
  color: green;
}

.akapit3{
color: blue;
}