body {
  font-family: system-ui;
  font-size: 18px;
}
details:focus,
details:focus-within,
details:hover {
  /* background:#ffeb3b; */
  /* outline:2px #000 solid; */
}


details ul li {}

summary {
  cursor: pointer;
}

summary:hover {
  opacity: .75;
}

.feed-url {
  color: #aaa;
}