/* general stuff, vars*/
:root {
  --navbar-width: 300px;
}

* {
  box-sizing: border-box;

}

body {
  margin: 0;
  border: 0;
}

html {
  font-family: sans-serif;
}

section {
  margin: 0;
  margin-bottom: 50vh;

}

/* navbar */
#navbar {
  position: fixed;
  width: var(--navbar-width);
  height: 100%;
  border-right: 1px solid black;
  overflow-y: auto;
}

#navbar header {
  padding: 20px 30px; /* should match .nav-link padding */
  font-size: 2rem;
  margin: 0;
}

.nav-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-link {
  display: block;
  padding: 20px 30px;
  border-top: 1px solid black;
  text-decoration: none;
  color: #666
}

/* main section */
#main-doc {
  margin-left: var(--navbar-width);
  padding: 15px 0;
  line-height: 1.5;
  margin-right: 30px;
  padding-top: 10px;
}

.main-section {
  padding: 10px 0 10px 10px;
}

.main-section header {
  margin: 0;
  font-size: 1.7em;
}

code {
  display: block;
  background-color: #f5f5f5;
  padding: 5px;
  margin-left: 10px;
  border-radius: 2px;
}

/* small screen */

@media (max-width: 650px) {

  #main-doc {
    margin-left: 0;
  }

  #navbar {
    position: static;
    width: 100%;
    height: 100%;
    border-right: none;
    border-bottom: 1px solid black;
    border-top: none;
    overflow-y: auto;
  }
  #navbar header {
    text-align: center;
  }
}