main.css

/* Unless otherwise specified, all of the images are clipart and thus free to use. */
.topnav {
  background-color: #333;
  overflow:hidden;
}

.topnav a{
  float:left;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.topnav a:hover {
  background-color:#ccc;
  color:black;
}

.topnav a.active{
  background-color: #00ace6;
  color:white;
}

body{
  background-color: #007399;
}

.main{
  position: relative;
  text-align: center;
}

.centered{
  position: absolute;
  top: 40%;
  left: 45%;
  transform: translate(-40%, -45%);
  color: white;
  font-size: 60px;
  font-weight: bold;
  text-shadow: 4px 4px #000;
}

footer{
  background-color: #333;
  overflow:hidden;
}

footer h3{
  float:left;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

#truck1 {
  width: 100%;
  height: 70%;
  max-height:600px;
}