.header {
  background-color: #ff0000;
  color: #ffffff;
  padding: 15px;
}

.row::after {
  content: "";
  clear: both;
  display: table;
}

ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: white;
}

li {
  float: left;
}

li a {
  display: block;
  color: black;
  background-color: white;
  text-align: center;
  padding: 10px 25px;
  text-decoration: none;
}

li a:hover {
  border-bottom-width: 5px;
  border-bottom-color: yellow;
}

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

[class*="col-"] {
  float: left;
}

.col-1 {width: 8.33%;}
.col-2 {width: 16.66%;}
.col-3 {width: 25%;}
.col-4 {width: 33.333%;}
.col-5 {width: 41.66%;}
.col-6 {width: 50%;}
.col-7 {width: 58.33%;}
.col-8 {width: 66.66%;}
.col-9 {width: 75%;}
.col-10 {width: 83.33%;}
.col-11 {width: 91.66%;}
.col-12 {width: 100%;}

.mid {
	border-style: solid;
	border-width: 1px;
	color: white;
	background-color: black;
	border-top-color: black;
	border-bottom-color: black;
	border-right-color: white;
	border-left-color: black;
}

.lower {
	border-color: grey;
	border-top-color: white;
	border-style: solid;
	border-width: 1px;
}
.dummy {
	color: black;
	background-color: black;
}