Table of Content for SharePoint Pages - https://fneve.blogspot.com/2017/10/table-of-content-for-sharepoint-pages.html

sp.tableOfContents.css

.tocMain {
 border-bottom: 1px #333 dashed;
}
.tocMain a:active {
}
.tocMain a:hover {
}
.tocMain a:visited {
 color: #0072c6; 
}
.tocMain.no-bullets {
 padding: 0px;
 padding-bottom: 1em;
 list-style-type: none; 
}
.tocMain.no-bullets ul {
 padding-left: 20px; 
}
.tocMain.no-bullets li {
 list-style-type: none;
 padding: 0.25em 0em; 
}

#s4-workspace.scroll .right-wp-zone-col {
  position: fixed;
  top: 70px;
  margin-right: 17px;
}

.right-wp-zone-col
{
float:right;
width:215px;
border-left:1px dashed;
position: absolute;
right:0;
padding-right: 25px;
}