html, body {
    font-family: "Open Sans", sans-serif; font-size: 18px;
}
.column {
  display: inline-block;
  width: 15%;
  height: 100%;
}
.row{
  display: block;
  margin: auto;
  text-align: center;
  width: 70%;
}
img{
  max-width: 100%;
}
h1{
  border: 1px solid #7d7b7b;
  text-align: center;
}
.demo {
  border: 1px solid #7d7b7b;
}
.nav {
    max-height: 70px;
}