style.css

html {
	scroll-behavior: smooth;
  }
body {
	font-size: 14px;
	padding: 45px 10px;
	font-family: Segoe UI, Tahoma;
	max-width: 800px;
	margin: auto;
	line-height: 1.5;
}
a {
	text-decoration: none;
	color: #4183C4;
}
a:hover {
	color: #064d95;
}
h1 {
	font-size: 35px;
	margin: 0;
	text-align: center;
}
h2 {
	font-size: 20px;
	padding: 50px 0 5px 0;
	color: #4183C4;
	border-bottom: 1px solid #eee;
}
h3 {
	font-size: 16px;
	margin: 10px 0 0 5px;
	margin-inline-start: 0;
}
h3 small{
	font-weight: 400;
}
p{
	margin: 0 10px;
}
ul, ol{
	margin: 0 5px;
}

ol{
	padding-inline-start: 10px;
}
.by{
	font-style: italic ;
}
.by::before{
	content: "by: ";
}
.fixedmenu{
	top: 0;
	right: 0;
	left: auto;
	bottom: auto;
	position: fixed;
	z-index: 101;
	margin: auto;
	width: 100%;
	background-color: #444;
	text-align: center;
	padding:10px;
}
.fixedmenu .item{
	display: inline;
	padding: 0 12px;
}
.fixedmenu a {
	color: #eee;
}
.fixedmenu .activeitem{
	display: inline;
	padding:20px;
}
.activeitem a{
	font-weight:bold;
}
.ulcenter{
	text-align: center;
	list-style-type: none;
	padding: 0;
}
.dimmed{
	color: #aaa;
}
.container{
	margin: 20px 0;
	display: flex;
	justify-content: center;
	flex-flow: row wrap;
}
.footer {
	margin-top: 40px;
	text-align: center;
	color: #9aa;
}
@media only screen and (max-width:600px) {
	.fixedmenu .item {
		display: none;
	}
}
@media only screen and (min-width:600px) {
	.fixedmenu .item {
		display: inline;
	}
}