strudel/website/src/repl/Repl.css

:root {
  --background: #222;
  --lineBackground: #22222299;
  --foreground: #fff;
  --caret: #ffcc00;
  --selection: rgba(128, 203, 196, 0.5);
  --selectionMatch: #036dd626;
  --lineHighlight: #00000050;
  --gutterBackground: transparent;
  --gutterForeground: #8a919966;
}

.darken::before {
  content: ' ';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  display: block;
  background: black;
  opacity: 0.5;
}

#code .cm-scroller {
  padding-top: 10px !important;
  padding-bottom: 50vh;
  font-family: inherit;
}
#code .cm-line > * {
  background: var(--lineBackground);
}

#code .cm-editor {
  background-color: transparent !important;
  height: 100%;
  z-index: 11;
}

#code .cm-theme {
  width: 100%;
  height: 100%;
}

#code .cm-theme-light {
  width: 100%;
}

#code .cm-cursorLayer {
  animation-name: inherit !important;
}

#code .cm-cursor {
  border-left: 2px solid currentcolor !important;
}

#code .cm-foldGutter {
  display: none !important;
}

#code .cm-focused {
  outline: none;
}