p.code
{
padding: 4px;
background-color:lightgrey;
color: blue;
font-family: courier;
border-color: black;
border-width: 1px;
border-style: none;
}
img.center
{
    display: block;
        margin-left: auto;
        margin-right: auto;
}
.style1
{
    font-family: "Courier New", Courier, monospace;
}
.style2
{
    font-family: "Courier New", Courier, monospace; font-weight: bold;
}

h1 {
	color: rgb(56, 97, 163);
	font-size:160%;
}	


h2 {
	color: rgb(56, 97, 163);
	font-size:140%;
}	

h3 {
	color: rgb(56, 97, 163);
	font-size:110%;
}
h4 {
	color: rgb(56, 97, 163);
	font-size:100%
}

hr {
    width: 97%;
}