message: style(examples): nav bar
diff: @@ -48,8 +48,8 @@ header a:hover {
  .menu {
  margin-left: auto;
  - background: rgb(255, 96, 96);
  - color: white;
  + background: #f3f3f3;
  + color: #333;
  border: none;
  padding: 5px 12px;
  border-radius: 5px;
  @@ -74,25 +74,26 @@ nav.is-open {
  nav a {
  text-decoration: none;
  font-size: 14px;
  - background: rgb(255, 96, 96);
  + background: #f3f3f3;
  color: white;
  - padding: 5px 12px;
  + padding: 6px 12px;
  border-radius: 5px;
  position: relative;
  display: block;
  margin-bottom: 5px;
  + text-align: center;
  }
  nav a,
  nav a:focus,
  nav a:active,
  nav a:visited {
  - color: #fff;
  + color: #333;
  }
  nav a:hover {
  - color: #fff;
  - box-shadow: 0 0 4px 1px rgba(0, 0, 0, 0.12);
  + color: #333;
  + box-shadow: 0 0 4px 1px rgba(0, 0, 0, 0.08);
  }
  nav a.active:before {
  @@ -101,7 +102,7 @@ nav a.active:before {
  width: 6px;
  height: 6px;
  background: white;
  - opacity: 0.5;
  + opacity: 0.8;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  @@ -165,6 +166,7 @@ nav a.active:before {
  font-size: 12px;
  display: inline-block;
  margin-bottom: 0;
  + padding: 5px 12px;
  }
  .menu {
  