body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
}

.navbar {
  overflow: hidden;
  background-color: #333;
}

.navbar a {
  float: left;
  font-size: 16px;
  color: white;
  text-align: row-row-center;
  padding: 14px 16px;
  text-decoration: none;
}

.subnav {
  float: left;
  overflow: hidden;
}

.subnav .subnavbtn {
  font-size: 16px;
  border: none;
  outline: none;
  color: white;
  padding: 14px 16px;
  background-color: inherit;
  font-family: inherit;
  margin: 0;
}

.navbar a:hover, .subnav:hover .subnavbtn {
  background-color: red;
}

.subnav-content {
  display: none;
  position: absolute;
  left: 0;
  background-color: red;
  width: 100%;
  z-index: 1;
}

.subnav-content a {
  float: left;
  color: white;
  text-decoration: none;
}

.subnav-content a:hover {
  background-color: #eee;
  color: black;
}

.subnav:hover .subnav-content {
  display: block;
}

.footer-nav {
    position: absolute;
    bottom: 0;
    overflow: hidden;
    background-color: #333;
    width: 100%;
    color: white;
    text-align: row-row-center;
}

.footer {
    position: absolute;
    bottom: 0;
    left: 0;
    z-index: 10;
}


section::after {
  content: "";
  display: table;
  clear: both;
}


.form {
  float: row-center;
  padding: 50px;
  width: auto;
  text-align: row-center;
  background-color: #f1f1f1;
  height: 275px; /* only for demonstration, should be removed */
}

.row-row-center {
  margin: left;
  width: 80%;
  border: 3px solid green;
  padding: 10px;
}

.left {
  position: absolute;
  right: 0px;
  width: 300px;
  border: 3px solid #73AD21;
  padding: 10px;
}
.right {
  float: right;
  width: 300px;
  border: 3px solid #73AD21;
  padding: 10px;
}

/* @media (max-width: 600px) {
  nav, article {
    width: 100%;
    height: auto;
  } */

  /* Responsive columns */
  @media screen and (max-width: 600px) {
    .column {
      width: 100%;
      display: block;
      margin-bottom: 20px;
    }
    nav, article {
      width: 100%;
      height: auto;
    }
  }