html,
body {
  min-height: 100vh;
}
body {
  background-color: #f8f9fa;
}
/* main {
  margin-top: 50px;
} */
body > footer {
  position: sticky;
  top: 100vh;
  height: 44px;
  background-color: #343a40;
  color: white;
  padding: 10px 0;
}