button {
  z-index: 99; 
  border: none; 
  outline: none; 
  background-color: var(--button-bg-colour); 
  color: var(--header-colour); 
  cursor: pointer; 
}

/* Back to Top Button */
#topBtn {
  position: fixed;
  display: none; 
  bottom: 1.2em; 
  right: 1.1dvw;
  padding: 0.9em;
  padding-left: 1.15em;
  padding-right: 1.4em; 
  border-radius: 0.5em; 
  font-size: 1em;
}

#topBtn img {
  filter: var(--button-img-colour);
  margin-top: 0.2em;
  margin-left: -0.15em;
  height: 1em;
}

button:hover {
  background-color: var(--button-hover-bg-colour);
}

button:hover .but-img {
  filter: var(--button-img-hover-colour);
}

/* Search Button */
.srchBtn {
  display: none; 
  position: fixed; 
  top: 1.2em;
  left: 2.75dvw; 
  z-index: 99;
}

.srchBtn > button { 
  padding: 0.9em;
  padding-left: 1.15em;
  padding-right: 0.65em; 
  border-radius: 0.5em; 
  font-size: 1em;
}

.srchBtn > button > img {
  filter: var(--button-img-colour);
  margin-top: 0.2em;
  margin-left: -0.15em;
  margin-right: 0.4em;
  height: 1em;
}

.srchFloat { 
  z-index: 8;
  background: var(--search-result-bg-colour);
  border-color: var(--border-colour);
  padding: 0.4em;
  border-radius: 10px;
  border-style: solid;
  display: none;
  position: relative;
  top: -3.2em;
  left: 3.65em;  
  z-index: 9;
  max-width: 218px;
  min-width: 218px;
}

.srchField {
  min-width: 200px;
  max-width: 200px;
  background-color: var(--search-bg-colour);
  border-radius: 5px;
  border-top-right-radius: 5px;
  border: 0.2em solid var(--border-colour);
  min-height: 2em;
  outline: none;
}

#srchResults {
  position: absolute;
  background-color: var(--sm-section-bg-colour);
  border: 0.2em solid var(--border-colour);
  border-radius: 2%;
  min-width: 200px;
  max-width: 200px;
  display: none;
  color: var(--alt-text-colour);
  font-size: 0.9em;
  z-index: 100;
}


/* Table of Contents Button */
.tocBtn {
  display: none; 
  position: fixed; 
  top: 5em; 
  left: 2.75dvw; 
  z-index: 99;
}

.tocBtn > button { 
  padding: 0.9em;
  padding-left: 1.15em;
  padding-right: 0.65em; 
  border-radius: 0.5em; 
  font-size: 1em;
}

.tocBtn > button > img {
  filter: var(--button-img-colour);
  margin-top: 0.2em;
  margin-left: -0.15em;
  margin-right: 0.4em;
  height: 1em;
}

/* Style TOC float header */
.tocFloat-head {
  border-bottom: var(--text-colour) solid 0.15em;
  display: flex;
}
.tocFloat-head > h2 {
  font-size: 1.2em;
  margin-left: 0.5em;
  margin-bottom: 0.2em;
  margin-top: 0.2em;
}
.tocFloat-head #tocFloat-close {
  position: absolute;
  right: 0.25em;
  top: 0.1em;
  font-size: 1.2em;
  background-color: transparent;
  border: none;
  outline: none;
  color: var(--text-colour);
  cursor: pointer;
}

/* Style content of Float TOC */
.tocFloat-cont {
  max-height: 300px;
  overflow: scroll;
  background-image: none;
  text-align: left;
}

.tocFloat-wrap {
  margin-top: 0.8em;
  margin-bottom: 0.8em;
}

.tocFloat-cont.showtop {
  background-image: radial-gradient(ellipse at top, var(--scroll-indicator-gradient-colour));
  background-position: top;
  background-repeat: no-repeat;
  background-size: 100% 9px;
}

.tocFloat-cont.showbottom {
  background-image: radial-gradient(ellipse at bottom, var(--scroll-indicator-gradient-colour));
  background-position: bottom;
  background-repeat: no-repeat;
  background-size: 100% 9px;
}

.tocFloat-cont.showtop.showbottom {
  background-image:
    radial-gradient(ellipse at top, var(--scroll-indicator-gradient-colour)),
    radial-gradient(ellipse at bottom, var(--scroll-indicator-gradient-colour));
  background-position: top, bottom;
  background-repeat: no-repeat;
  background-size: 100% 9px, 100% 9px;
}

/* style TOC for float */
.tocFloat {
  display: none;
  position: relative;
  top: -3.2em;
  left: 3.65em; 
  z-index: 9;
  background: var(--sm-section-bg-colour);
  border-color: var(--border-colour);
  border-radius: 10px;
  border-style: solid;
  max-width: 300px;
  min-width: 200px;
}

.tocFloat a {
  color: var(--text-colour);
  display: block;
}

.tocFloat a:hover {
  color: var(--toc-hover-colour);
  background-color: var(--toc-hover-bg-colour);
  border-radius: 0.2em;
}

.tocFloat a:hover > .toc-num::before {
  color: var(--toc-hover-bg-colour);
}

.tocFloat .toc-ul {
  counter-reset: section1;
  list-style: none;
  padding-left: 1.2em;
  margin-left: -0.5em;
  margin-right: 0.5em;
  margin-top: 0;
  margin-bottom: 0;
}

.tocFloat li {
  counter-increment: section1;
  color: var(--text-colour);
}

.tocFloat .toc-ul ul {
  counter-increment: section1;
}

.tocFloat .toc-num::before {
  content: counters(section1, ".") ". ";
  font-weight: 600;
  color: var(--toc-num-colour);
  padding-left: 0.3em;
}