body {
    background-color: black;
    color: #00FF41;
    font-family:'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;

}
/* Add a black background color to the top navigation */
.topnav {
  overflow: hidden;
}
h1 {
    text-align: center;
}
/* Style the links inside the navigation bar */
.topnav a {
  float: left;
  color: #00FF41;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

/* Change the color of links on hover */
.topnav a:hover {
  background-color: #000;
  color: #f2f2f2;
}

/* Add a color to the active/current link */
.topnav a.active {
  background-color: #00FF41;
  color: black;
}
.row {
  display: flex;
  flex-wrap: wrap;
  padding: 0 4px;
}

/* Create four equal columns that sits next to each other */
.column {
  flex: 25%;
  max-width: 25%;
  padding: 0 4px;
}

.column img {
  margin-top: 8px;
  vertical-align: middle;
  width: 100%;
  width: auto;
}

.title a:visited {
  color: #00FF41;
  background-color: transparent;
  text-decoration: none;
}
/* Responsive layout - makes a two column-layout instead of four columns */
@media screen and (max-width: 800px) {
  .column {
    flex: 50%;
    max-width: 50%;
  }
}

/* Responsive layout - makes the two columns stack on top of each other instead of next to each other */
@media screen and (max-width: 600px) {
  .column {
    flex: 100%;
    max-width: 100%;
  }
}