textual/sandbox/uber.css

App.-show-focus *:focus {
  tint: #8bc34a 50%;
}

#uber1 {
  layout: vertical;
  background: green;
  overflow: hidden auto;
  border: heavy white;
  text-style: underline;
}

#uber1:focus-within {
  background: darkslateblue;
}

#child2 {
  text-style: underline;
  background: red;
}

.list-item {
  height: 20;
  color: #12a0;
  background: #ffffff00;
}