* {
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

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

/* Style the header and top navigation bar */
.header {
  overflow: hidden;
  background-color: #333;
  padding: 15px;
  color: white;
}

.header h2 {
  color: white;
  margin: 50px 0 10px 0;
}

.header img {
  height: 150px;
  margin: 10px 20px 10px 0;
  float: left;
}

/* Style the header and topnav links
.header a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

/* Change color on hover
.header a:hover {
  background-color: #ddd;
  color: black;
}
*/

/* Style the main content */
.main {
  background-color: #ddd;
  padding: 15px;
  height: 80vh;
}

.mainimg {

  height: 170px;
}

/* Style the footer */
.footer {
  background-color: #f1f1f1;
  padding: 15px;
  font-size: 12px;
  line-height: 15px;
  text-align: center;
}
.footer sup {
  font-size: 8px;
}