body {
  color: #666;
  background: grey;
}
.wrapper {
  padding: 5px;
  width: 960px;
  margin: 20px auto;
  background: #fff;
}
header {
  padding: 15px 15px;
  text-align: center;
}
header img {
  width: 20%;
  height: 20%;
}
header h1 {
  font-size: 50px;
  margin: 0px;
}
header p {
  margin: 0px;
}
nav {
  text-align: center;
}
nav ul {
 padding: 0px;
}
nav ul li {
  display: inline;
  padding-right: 10px;
}
nav ul li {

}
.btn {
  -webkit-border-radius: 6;
  -moz-border-radius: 6;
  border-radius: 6px;
  font-family: Arial;
  color: #ffffff;
  font-size: 15px;
  background: #666;
  padding: 10px 10px 10px 10px;
  text-decoration: none;
  display: inline;
}
.btn a {
  color: #fff;
  text-decoration: none;
}
.column-container {
  display: table;
  width: auto;
}
.first-column {
  width: 33%;
  padding: 5px 15px;
  background: #E5E5E5;
  display: table-cell;
  text-align: center;
}
.second-column {
  width: 33%;
  padding: 5px 15px;
  margin: 0px 5px 5px 5px;
  display: table-cell;
}
footer{
  clear: both;
  padding: 15px 15px;
  text-align: center;
}
header, nav, .column-container{
  margin-bottom: 5px;
}
.wrapper, header, nav, .first-column, .second-column, .third-column, footer{
  border: solid 3px #ccc;
}
.answer{
  display: none;
}