details-view.css

:root {
  font-family: sans-serif;
  font-size: 0.8rem;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  width: 100%;
  min-width: min-content;
}

header {
  width: 100%;
  height: 50px;
  background-color: #666; color: #fff;
  font-family: sans-serif;
  line-height: 1.4rem;
  padding-left: 20px;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0;
  justify-content: stretch;
  justify-items: stretch;
}

h1 {
  font-size: 1em;
  margin: 0;
  padding: 4px;
  text-decoration: inherit;
  font-weight: bold;
  text-transform: uppercase;
}

h2 {
  font-size: inherit;
  margin: 0;
  padding: 4px;
  color: inherit;
  font-weight: normal;
}

header a {
  color: inherit;
  text-decoration: underline;
  text-underline-position: under;
  text-decoration-color: #fff4;
}

header a:hover {
  background-color: #0004;
}

pre, code {
  font-family: "Courier New", Consolas, monospace;
}