body {
  max-width: 40em;
  margin: 0 auto;
  padding: 5px;
  font-family: Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.6em;
  color: black;
  background-color: white;
}

a {
  text-decoration:none;
}

h1, h2 {
  font-family: Helvetica, sans-serif;
  font-weight: normal;
}

h3 {
  font-family: Helvetica, sans-serif;
  font-size: 16px;
  margin-top: 1.4em;
  margin-bottom: 1.4em;
}

h4 {
  font-family: Helvetica, sans-serif;
  font-weight: normal;
}

blockquote {
  text-align: center;
  border-radius: 8px;
  margin: auto;
  margin-top: 1.4em;
  margin-bottom: 1.4em;
  padding: 0.6em 8px;
  width: 80%;
}

.collapsible {
  background-color:  	 	#C0C0C0;
  color: white;
  cursor: pointer;
  padding: 10px;
  width: 100%;
  border: none;
  text-align: left;
  outline: none;
  font-size: 15px;
}

.active, .collapsible:hover {
  background-color:  	#D3D3D3;
}

.content {
  padding: 0 10px;
  display: none;
  overflow: hidden;
  background-color:  	#DCDCDC;
}