body {
  background-image: linear-gradient(180deg, black, darkblue, black);
  font-family: "OCR A Std", monospace;
  color: white;
  font-size: 20px;
}
  .parallax {

  background-image: url("cateye.jpg");
  min-height: 550px;

  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  }
  .parallax2 {

  background-image: url("bcat.jpg");
  min-height: 550px;

  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  }
  .parallax3 {

  background-image: url("cat3.jpg");
  min-height: 450px;

  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  }
  .parallax4 {

  background-image: url("cat4.jpg");
  min-height: 500px;

  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  }
  
  .parallax5 {

  background-image: url("cat5.jpg");
  min-height: 400px;

  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;

}
.topnav {
  overflow: hidden;
  background-color: black;
}

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

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

.topnav a.active {
  background-color: darkblue;
  color: white;
}

 h1 {color:white; font-size: 90px; position:absolute;}
 
 {
  box-sizing: border-box;
}


.header {
  text-align: center;
  padding: 32px;
}

.row {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  padding: 0 4px;
}

.column {
  -ms-flex: 25%;
  flex: 25%;
  max-width: 25%;
  padding: 0 4px;
}

.column img {
  margin-top: 70px;
  vertical-align: middle;
  width: 100%;
}


@media screen and (max-width: 600px) {
  .column {
    -ms-flex: 100%;
    flex: 100%;
    max-width: 100%;
  }
  

footer {
  text-align: center;
  padding: 3px;
  color: white;
  
}