smdm-slide-menu/docs/demo.css

A library agnostic multilevel page menu with a smooth slide effect based on CSS transitions, focused on accessibility.

:root {
  --color-primary: #2e6da4;
  --color-primary-dark: #1e4f7a;
  --color-bg-page: #f5f5f5;
}

html {
  font-size: 20px;
}

body {
  font-family: Lato, sans-serif;
  line-height: 1.4;
  color: rgba(0, 0, 0, 0.87);
  background-color: var(--color-bg-page);
}

h1 {
  font-size: 1.8rem;
  font-weight: 700;
}

h2 {
  margin-top: 1.5rem;
  margin-bottom: 1rem;
  font-size: 1rem;
}

a {
  text-decoration: none;
  color: var(--color-primary);
}

.btn,
a {
  transition: background-color 0.15s ease-in-out;
  will-change: background-color;
}

p {
  margin: 0 0 0.5rem;
}

p:last-of-type {
  margin: 0 0 2rem;
}

footer {
  margin-top: 2rem;
  font-size: 90%;
}

footer a {
  font-style: italic;
}

footer path {
  fill: var(--color-primary);
}

.btn {
  padding: 0.6rem 0.8rem 0.64rem;
  border: none;
  color: #fff;
  cursor: pointer;
  font-family: inherit;
  font-size: 85%;
  line-height: 1;
}

.icon {
  height: 0.6rem;
  margin: 0 0 0.1rem;
  vertical-align: middle;
}

main {
  display: block;
  width: 90%;
  margin: 2.5rem auto;
}

main .btn {
  width: 100%;
  display: block;
  margin: 0 0.25rem 0.75rem 0;
  background-color: var(--color-primary);
  border-radius: 0.2rem;
  font-size: 70%;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

@media (min-width: 768px) {
  main {
    max-width: 40rem;
  }

  main .btn {
    width: auto;
    display: inline-block;
  }

  main .btn:hover {
    background-color: var(--color-primary-dark);
  }
}

main #events {
  font-family: monospace;
  font-size: 80%;
}

/* Integration demo: host-project overrides for .slide-menu styling.
   Note: do NOT set a fixed width here — let the library control width
   via --smdm-sm-menu-width so fold layout works correctly. */
.slide-menu {
  --smdm-sm-menu-width: 340px;
  line-height: 1.4;
  font-size: 0.8rem;
}

.slide-menu,
.slide-menu a {
  color: #fff;
}

.slide-menu a {
  text-decoration: none;
}

.slide-menu a:hover {
  background-color: var(--smdm-sm-color-hover);
}

.slide-menu .slide-menu__backlink {
  text-transform: uppercase;
}