h1{
  margin: 0px;
  text-align: left;
}

h2{
  font-weight: normal;
  background-color: #70b2e9;
  margin: 0px;
  margin-bottom: 20px;
  padding-top: 20px;
  padding-bottom: 20px;
  text-align: center;
}

p{
  max-width: 1000px;
}

img{
  border: none;
  max-width: 100%;
}

svg{
  max-width: 100%;
}

.sidebar{
  border-radius: 5px;
  padding: 20px;
  width: 100%;
}

.nav-category{
  border-top: 1px solid grey;
  border-left: 1px solid grey;
  border-right: 1px solid grey;
  color: black;
  display: block;
  padding: 10px;
  text-align: left;
  width: 100%;
}

.nav-category:last-child{
  border-bottom: 1px solid grey;
}

.nav-category:hover{
  background-color: lightgrey;
  transition: background-color 0.3s;
}

.subcategory{
  padding-left: 25px;
}

.arrow{
  display: inline;
}

.content{
  min-height: 100vh;
}

.sub-topic{
  margin-top: 50px;
  margin-bottom: 100px;
}

.inactive{
  color: grey;
  cursor: context-menu;
  font-style: italic;
  text-decoration: line-through;
}

.inactive:hover{
  color: grey;
  cursor: context-menu;
  font-style: italic;
  text-decoration: line-through;
}

.references{
  margin-top: 50px;
}

.reference-link{
  font-style: italic;
}

.caption{
  text-align: center;
  font-size: 12px;
  font-style: italic;
}

footer{
  margin-top: 50px;
}