.passage {
  padding-top: 2em;
  padding-bottom: 2em;
}
.ref {
  color: silver;
}
.ref:before {
  content: "[";
}
.ref:after {
  content: "] "
}
.subject {
  text-decoration: underline;
  text-decoration-thickness: 3px;
}
.object {
  text-decoration: underline;
  text-decoration-style: wavy;
}
.verb {
  border: thin solid black;
  padding: 1px 3px; 
}
blockquote.subordination {
  padding: 0em;
}
.connector {
  background: yellow;  
  font-style: bold;
}
.nav {
  text-align: center;
}
.left {
  float: left;
}
.right {
  float: right;
}
footer {
    text-align: right;
    font-style: italic;
    padding-top: 1em;
    margin-top: 2em;
}

footer code {
    font-style: normal;
    font-family: monospace;
}

 /** Tool tip functionality: */   
span.tooltip{
  position: relative;
  display: inline;
}
span.tooltip:hover:after{ 
  visibility: visible; 
  opacity: 0.8; 
  bottom: 20px; 
}
span.tooltip:hover:before{ 
  visibility: visible; 
  opacity: 0.8; 
  bottom: 14px; 
}   
span.tooltip:after{
  display: block;
  visibility: hidden;
  position: absolute;
  bottom: 0;
  left: 50%;
  opacity: 0.9;
  content: attr(tool-tips);
  height: auto;
  width: auto;
  min-width: 100px;
  padding: 5px 8px;
  z-index: 999;
  color: #fff;
  text-decoration: none;
  text-align: center;
  background: rgba(0,0,0,0.85);
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  border-radius: 5px;
}
span.tooltip:before {
  position: absolute;
  visibility: hidden;
  width: 0;
  height: 0;
  left: 50%;
  bottom: 0px;
  opacity: 0;
  content: "";
  border-style: solid;
  border-width: 6px 6px 0 6px;
  border-color: rgba(0,0,0,0.85) transparent transparent transparent;
}