body {
  background-color: white;
  color: black;
  font-family: Verdana;
  width: 60em;
  margin-left: auto;
  margin-right: auto;
}

#container
{
  width: 60em;
  margin-left: auto;
  margin-right: auto;
}

/*
 #list li {
display: inline;
text-align: center;
   }
 #list li {
	width: 900px; 
	margin: 0 auto; 
}
#list a {
text-decoration: none;
color: green;
}
#list {
background-color: #3fa46a;
width: 900px; 
	margin: 0 auto; 
}
*/
.link-1 {
  transition: 0.3s ease;
  background: #008900;
  color: #ffffff;
  font-size: 20px;
  text-decoration: none;
  border-top: 4px solid #00A800;
  border-bottom: 4px solid #00A800;
  padding: 20px 0;
  margin: 0 20px;
}
.link-1:hover {
  border-top: 4px solid #ffffff;
  border-bottom: 4px solid #ffffff;
  padding: 6px 0; 
}

nav {
  margin-top: 40px;
  padding: 24px;
  text-align: center;
  box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
}

#nav-1 {
  background: #008900;
  width: 900px;
}

/* width:  300px;
height: 25px;
border-radius: 5px;
}
*/

/* Main content */
.main {
  margin-top: 30px; /* Add a top margin to avoid content overlay */
} 

/* "auto" makes the left and right margins center the wrapper */
#wrap { 
	width: 900px; 
}

table, th, td {
  border: 1px solid black;
  border-collapse: collapse;
}

* { box-sizing: border-box; }

body { 
  font-family: 'Open Sans', sans-serif;
  color: #666;
}


header {
	padding: 0 15px;
}

.columns {
	display: flex;
	flex-flow: row wrap;
	justify-content: space-between;
	margin: 5px 0;
	width: 900px;
}

.column {
	flex: 1;
	border: 1px solid gray;
	margin: 2px;
	padding: 10px;
}

footer {
	padding: 0 15px;
}