message: Make navigation bar of docs.rs fixed
diff: @@ -117,6 +117,9 @@ div.nav-container {
  height: 32px;
  border-bottom: 1px solid $color-border;
  background-color: #fff;
  + left: 0;
  + right: 0;
  + position: fixed;
  li {
  border-left: 1px solid $color-border;
  @@ -223,7 +226,7 @@ div.nav-container {
  }
  div.nav-container-rustdoc {
  - position: absolute;
  + position: fixed;
  left: 0;
  right: 0;
  top: 0;
  