vue/examples/firebase/style.css

ul {
  padding: 0;
}

.user {
  height: 30px;
  line-height: 30px;
  padding: 10px;
  border-top: 1px solid #eee;
  overflow: hidden;
  transition: all .25s ease;
}

.user:last-child {
  border-bottom: 1px solid #eee;
}

.v-enter, .v-leave {
  height: 0;
  padding-top: 0;
  padding-bottom: 0;
  border-top-width: 0;
  border-bottom-width: 0;
}

.errors {
  color: #f00;
}