.example-viewport {
     height: 1000px;
     width: 100%;
	 margin-left: auto;
	 margin-right: auto;
}
button{
	float: left;
	padding: 10px;
}
.example-card {
  width: 100%;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}
.example-card:hover {
  border: solid;
}
#card-title {
  font-weight: bold;
  cursor: pointer;
}
#cardContainer {
	width: 29% ;
	margin-top: 5%;
	margin-left: 2%;
	margin-right: 2%;
	float: left;
}