:root{
  --background-col: #3A6EA5;
  --text-col:white;
}

::selection {
  background: white;
  color: var(--background-col)
}

ul {margin-bottom:1em;}

.custom {
  list-style: none;
  padding-left: 0;
}

.custom li::before {
  content: attr(data-bullet);
  display: inline-block;
  width: 3.7ch;          /* controls alignment */
  text-align: right;   /* bullet alignment */
  padding-right: 0.85ch;
}

body {
  font-family: sans-serif;
  line-height:1.5;
  
  background-color:var(--background-col);
  color:var(--text-col);
  
  margin:auto;
  max-width:40em;
  padding:1em;
}

h1,h2 {
  font-weight: normal;
  
  margin-bottom:0;
}

h3 {
  margin-bottom:0;
  font-size:100%;
}

a {color: var(--text-col);}

summary {
  list-style: none;           /* removes default arrow in some browsers */
  cursor: pointer;
}