a {
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.video {
  position: relative;
  overflow: hidden;
  width: 100%;
}

.video::after {
  display: block;
  content: "";
  padding-top: 56.25%;
}

.video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.firebaseui-container {
  background-color: #212529;
}
.firebaseui-title, .firebaseui-input, .firebaseui-label {
  color: #ccc;
}
/* login dialog */
.mdl-shadow--2dp {
  -webkit-box-shadow: none;
  -moz-box-shadow: none;
  box-shadow: none;
}