html {
  min-height: 100%;
}

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

body > main {
  flex: 0 0 auto;
}

body > footer.site-footer {
  margin-top: auto;
  padding-top: 28px;
  flex-shrink: 0;
}