body {
  margin: 0;
  font-family: monospace;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 0 10%;
  
}
h3 + p { margin-top: 0; }
main {
  flex: 1;
}

footer {
  margin-top: auto;
}


footer ul.contactbuttons {
  list-style: none;
  padding: 10px;
  margin: 0;
  display: flex;
  justify-content: center;
}

footer ul.contactbuttons a img {
  filter: brightness(0) saturate(100%) invert(66%) sepia(27%) saturate(4583%) hue-rotate(326deg) brightness(103%) contrast(101%)
}

nav {
  background: white;
  border-bottom: 1px solid #ddd;
  padding: 10px 20px;
  display: flex;
  gap: 20px;
}

nav a {
  text-decoration: none;
  color: black;
  white-space: nowrap;
}

nav a:hover {
  color:forestgreen
}

a.current {
  color: darkgreen;
}

.done::after {
  content: "";
}