PublishingCSS:TheNewSocial

body {
	background: linear-gradient( yellow, greenyellow );
}
h1, h2, h3, h4, h5 {
	color: red;
}
section:has( h2 ) {
	display: none;
}
section:has( 
	h1:target,
	h2:target,
	h3:target,
	h4:target
) {
	display: block;
}


#toc {
	position: fixed;
	left: calc( -1 * ( 30%  - 4rem ) );
	box-sizing: border-box;
	min-width: 30%;
	width: 30%;
	height: calc( 100vh - 2rem );
	top: 0;
	padding: 1rem;
	padding-left: 3rem;
	transition: right 0.2s linear;
}
#toc:hover {
	left: calc( 0% );
}
#toc > ul > li {
  border-radius: 1rem;
  background-color: lightgray;
  box-shadow: 0 0 1rem 0 fuchsia;
  padding: 1rem;
  margin: 0;
}

.toclevel-3 {
	display: none;
}