:root {

  --bg-color: #171717;
  --text-color: #bbb;
  --link-color: #106DEF;

  --header-color: #f0f0f0;

  background-color: var(--bg-color);
  color: var(--text-color);
  font-size: 20px;
  font-family: "Verdana", sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
  text-decoration: none;
  color: inherit;
}

em {
  font-style: italic;
}

ul, ol {
  list-style: none;
  margin: 1em 0;
}

body {
  line-height: 1.3;
  display: flex;
  justify-content: center;
}

main {
  width: min(80%, 900px);
}

a {
  color: var(--link-color);
}

a:hover {
  color: var(--header-color);
}

h1, h2, h3, h4, h5, h6 {
  color: var(--header-color);
  margin: 0.7em 0;
}

h1 {
  font-size: 2em;
  margin: 1em 0;
  font-family: "Brush Script MT", cursive;
}

h2 {
  font-size: 1.5em;
}

h3 {
  font-size: 1.17em;
}

h4 {
  font-size: 1.05em;
}

hr {
  background-color: var(--header-color);
  height: 1px;
  margin: 1em 0;
}

p {
  margin: 1em 0;
}

ul {
  list-style: "- " outside;
  padding-left: 1em;
}

.submenu-list {
  margin-top: 2em;
  font-size: 1.15em;
  list-style: none;
  padding-left: 0;
}

.submenu-list li {
  padding: 1em 0;
  /* This is a small hack to make the borders of adjacent list items collapse */
  margin-top: -1px;
  border-bottom: 1px solid var(--header-color);
  border-top: 1px solid var(--header-color);
}