.float-left {
  float: left;
  margin-right: 10px;
}

.float-right {
  float: right;
  margin-left: 10px;
}


/* article title links, black without underline */
h1 > a:link {
  color: black;
  text-decoration: none;
}

h1 > a:visited {
  color: black;
  text-decoration: none;
}

h1 > a:hover {
  text-decoration: none;
}

h1 > a:active {
  color: black;
  text-decoration: none;
}
h2 > a:link {
  color: black;
  text-decoration: none;
}

h2 > a:visited {
  color: black;
  text-decoration: none;
}

h2 > a:hover {
  text-decoration: none;
}

h2 > a:active {
  color: black;
  text-decoration: none;
}

.header-topbar {
  background-color: black;
  background-image: none;
}

/* menu bar */
.container-nav {
   max-height: 3rem;
   align-content: center;
}