.btn_google {
	display: block;
  position: relative;
	left: 50%;
  width: 104px;
  margin-left: -52px;
  margin-top: 0.5em;
}

p {
  margin-top: 2em;
}
  
h2 {
  margin-top: 1.5em;
  margin-bottom: -0.5em;
}

pre {
  margin-bottom: -1em;
}