div.box {
  background-color: lightgray;
  width: 50px;
  /*       top  right bottom left */
  padding: 20px;
  margin: 20px 2px 4px 9px;
  border: 5px dashed red;
  display: inline-block;
}

ul.nav {
  overflow: hidden;
  list-style-type: none;
  background-color: blanchedalmond;
  margin: 0;
  padding: 0;
  width: 100%;
}
ul.nav > li {
  float: left;
}
ul.nav > li a,
.dropbtn {
  display: inline-block;
  color: black;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}
ul.nav > li a:hover,
.dropdown:hover .dropbtn {
  background-color: black;
  color: white;
}
ul.nav > li.dropdown {
  display: inline-block;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: blanchedalmond;
  min-width: 160px;
  z-index: 1;
}
.dropdown-content a {
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}

.dropdown-content a:hover {
  background-color: black;
  color: white;
}

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

img.float {
  float: right;
}

div.footer, div.header {
  background-color: lightblue;
  text-align: center;
  padding: 20px;
  overflow: hidden;
}