body {
  background: rgb(230, 230, 230);
}
div {
  width: 600px;
  display:block; 
  margin:0 auto;
  background: white;  
  padding: 100px;
  font-size: 16px;
  line-height: 26px;
  -webkit-box-shadow: 0px 0px 21px 1px rgba(0,0,0,0.75);
  -moz-box-shadow: 0px 0px 21px 1px rgba(0,0,0,0.75);
  box-shadow: 0px 0px 21px 1px rgba(0,0,0,0.75);
}
h1 {
  text-align: center;
}
img {
  display: block; 
  margin: 0 auto;
}