body {
  font-family: Verdana, sans-serif;
  margin: 0;
}

header {
  position: sticky;
  width: 30%;
  min-height: 100%;
  min-width: 400px;
  background-color: lightgray;
  padding: 2em;
  z-index: 2;
  background-image: linear-gradient(to top, #fad0c4 0%, #ffd1ff 100%);
}

#search-bar {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  text-align: left;
}

#repo {
  flex: 1;
  margin-right: 2em;
}

#loader {
  border: 3px solid #f3f3f3; /* Light grey */
  border-top: 3px solid #3498db; /* Blue */
  border-radius: 50%;
  width: 12px;
  height: 12px;
  animation: spin 2s linear infinite;
  display: block;
  margin: auto;
  margin-left: 1em;
  visibility: hidden;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

#errorMessage {
  visibility: hidden;
  color: red;
}

#graph {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
}

#graph > svg {
  width: 100%;
  height: 100%;
}

li > em,
#help {
  color: #333;
  font-size: small;
}

details {
  margin-top: 1em;
}

ul {
  list-style-type: none;
}