html, body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.content {
  flex: 1 0 auto;
}

footer {
  flex-shrink: 0;
  margin-top: auto;
}

#bottom-footer {
  background-color: #e9ecef;
  padding: 10px 0;
  margin-top: 20px;
}