h1 {
  color: green;
  font-size: 50px;
}

body { 
  font-family: Arial, sans-serif;
  background-color: #999;
}

img {
  max-width: 100%;
  height: auto;
}

.kehys {
  max-width:800px;
  margin-left:auto;
  margin-right:auto;
  background-color: white;
  padding:30px
}