* {
    background-color: lightblue;    
}

img {
    max-width: 100%;
}

h1,h2,h3,h4,h5 { font-family: sans-serif; color: midnightblue; } 
h1 {  font-size: 150%; font-variant: small-caps; }
h2 {  font-size: 115%; color: blueviolet; }
h3 {  text-align:left; font-size: 120%; }
h4 {  font-size: 105%; margin: 0%; }
h5 {  font-size: 100%; }
h6 {  font-size: 100%; }
h7 {  text-align:center; font-family: sans-serif; font-size: 90%; }

h4:hover {
    width: 100%;
    border: 1px solid blue;
    background-color: aqua;
}

center { text-align:center; }
thick { font-weight:bold; }

a:link { color:blue; text-decoration: none}
a:visited { color:midnightblue; text-decoration: none}
a:hover { background-color: cornflowerblue;
	  text-decoration: underline;
	  border: 1px solid blue;
	}

ul { list-style-type: square; }
li { margin-top:0em; margin-bottom:0em; padding:0em }

table, th, td {
    padding: 5px;
    border: 1px solid black;
}