* {
  box-sizing: border-box;
}

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

/* Style the header */
header {
  background-color: #3498DB;
  padding: 30px;
  text-align: center;
  font-size: 200px;
  color: white;
}
/* Create two columns/boxes that floats next to each other */
nav {
  float: left;
  width: 20%;
  /*height: 300px;  only for demonstration, should be removed */
  background-color: white;
  padding: 30px;
}

/* Style the list inside the menu */
nav ul {
  list-style-type: none;
  padding: 0;
}


article {
  float: left;
  padding: 20px;
  width: 70%;
  background-color: white;
  /* height: 300px;  only for demonstration, should be removed */
}

/* Clear floats after the columns */
section:after {
  content: "";
  display: table;
  clear: both;
}

/* Style the footer */
#footer {
            position: fixed;
            padding: 10px 10px 0px 10px;
            bottom: 0;
            width: 100%;
            /* Height of the footer*/
            height: 60px;
            background: #3498DB;
            text-align: center;
            color: white;
            }

/* Responsive layout - makes the two columns/boxes stack on top of each other instead of next to each other, on small screens */
@media (max-width: 600px) {
  nav, article {
    width: 100%;
    height: auto;
  }
}
* {
  box-sizing: border-box;
}

/* Create two equal columns that floats next to each other */
.column {
  float: left;
  width: 50%;
  padding: 10px;
  height: 300px; /* Should be removed. Only for demonstration */
}

/* Clear floats after the columns */
.row:after {
  content: "";
  display: table;
  clear: both;
}