.full { flex: 1 1 100%; }
.half { flex: 1 1 49%; }
.fith { flex: 1 1 20%; }



nav {
  display: flex;
	border: 2px ridge ;
	border-radius: 5px;
	padding: 5px;
}

nav a { 
  display: block;
margin: 10px;
  padding: 4px;
  text-decoration: none;
}

nav a:hover, nav a:focus {
  background-color: #74a195 ;
}
.framing_device {
  width: 1100px;  
  padding: 20px; 
  place-self: center;
}
.testbox {
  padding: 1em;
  background-color: #74a195;
  border: 10px ridge ;
  border-radius: 20px;
  border-color: #1c1717;
  width: 900px;
  place-self: center;
}

.boxheader {
  padding: 8px;
  background-color: #4b6b63;
  width: 1000px;
  height: 26px;
  place-self: center;
  display: grid;
  grid-template-columns: 5fr 5fr;
}

body {
  background-color:#7d9177; }