*{
      box-sizing: border-box;
}


body{
  padding: 0;
  margin: 0;
  background: black;
  color: #ccc;
  font-family: monospace;
}

h1{
  color: orange;
}

.page{
  padding: 20px;
}

ol {
  counter-reset: item;
  padding: 0 0 20px 20px;
  border-left: 1px solid #606060;
}

li {
  display: block;
  margin: 0 0 10px 0;  
}

li::before {
  content: counters(item, ".") " ";
  counter-increment: item;
  color: yellow;
  font-weight: bold;
  margin: 0 0 0 -22px;
  background: black;
}

ol > li::marker {
  font-weight: bold;
}    

.sticky-enabled h2,
.sticky-enabled h3
{
  position: sticky;
  background: black;
  z-index: 5;
  box-shadow: 0 2px 5px rgba(0,0,0,0.5);
  top: var(--h2-height);
  padding: 5px;
}

.sticky-enabled h2{
  top: 19px;
}

.sticky-enabled h3{
  --h2-height: 89px;
  z-index: 3;
}

h2, h3{
  color: white;      
}

.sticky-enabled h2,
.sticky-enabled h3{
  min-height: 70px;      
}    

input, label{
  cursor: pointer;
}

header{
  width: 100%;
  position: sticky;
  padding: 2px 10px;
  top: 0;
  left: 0;
  background: black;
  display: flex;
  justify-content: space-between;
  box-shadow: 0 2px 5px rgba(0,0,0,0.5);
  z-index: 10;
}

header .logo{
  color: cyan;
}

.inverted{
  background: white;
}

.inverted .cont-page{
  filter: invert(1);
}

.sticky-trigger{
  display: block;
  margin: 10px 0;
}

a{
  color: cyan;
}