body {
  margin: 0 auto;
  max-width: 600px;
  padding: 20px 0px 20px 200px;
}

.container {
  border: 12px solid #dedede;
  background-color: #f1f1f1;
  border-radius: 35px;
  padding: 0px 20px;
  margin: 10px 0;
}


/*
margin: top_bottom left_right;
https://www.techonthenet.com/css/properties/margin.php#:~:text=Two%20Values,right%20sides%20of%20the%20element.
*/