* {
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
}

body { 
    background-image: url("page_images/seamless_metal_texture.jpg");
    background-repeat: repeat;
    font-family: "Anton", sans-serif;
    font-size: 14px;
    color: black;
    display: flex;
    flex-direction: column;
}

table {
	margin-left: auto; margin-right: auto;
	border-spacing: 20px 20px;
	border-collapse: separate;
}

.button {
    background-color: black;
    border: none;
    padding: 5px 10px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    border-radius: 10px;
}

.button:hover {
    background-color: red;
}

#header {
 
}

#contents {
    flex: auto;
   overflow-y: auto;
}

.navmain {font-size: 20px;
    border-spacing: 15px 10px;
}

.navsub {font-size: 18px;
    border-spacing: 15px 10px;
}

.preview {height: 100px;
    width: 100px;
}

.preview:hover {height: 100%;
    width: 100%;
}

h1 {
	text-align: center;
}
h4 {
	text-align: center;
}
/* unvisited link */
a:link {
    color: red;
}

/* visited link */
a:visited {
    color: red;
}

/* mouse over link */
a:hover {
    color: black;
}

/* selected link */
a:active {
    color: white;
}