Add max level option

themes/pure.css

@@ -0,0 +1,152 @@
+* {
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+  -webkit-overflow-scrolling: touch;
+  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
+  -webkit-text-size-adjust: none;
+  -webkit-touch-callout: none;
+  -webkit-font-smoothing: antialiased;
+}
+
+/* navbar */
+nav {
+  position: absolute;
+  right: 0;
+  left: 0;
+  z-index: 10;
+  margin: 25px 60px 0 0;
+  text-align: right;
+}
+
+nav a {
+  margin: 0 1em;
+  padding: 5px 0;
+  font-size: 16px;
+  text-decoration: none;
+  color: inherit;
+  transition: color .3s;
+}
+
+/* github corner */
+.github-corner {
+  position: absolute;
+  top: 0;
+  right: 0;
+  z-index: 10;
+}
+
+.github-corner svg {
+  color: #fff;
+  height: 80px;
+  width: 80px;
+}
+
+.github-corner:hover .octo-arm {
+  animation:octocat-wave 560ms ease-in-out;
+}
+
+@keyframes octocat-wave {
+  0%,100%{ transform: rotate(0); }
+  20%,60%{ transform: rotate(-25deg); }
+  40%,80%{ transform: rotate(10deg); }
+}
+
+@media (max-width: 500px) {
+  .github-corner:hover .octo-arm {
+    animation: none;
+  }
+  .github-corner .octo-arm {
+    animation: octocat-wave 560ms ease-in-out;
+  }
+}
+
+html, body {
+  height: 100%;
+}
+
+body {
+  -moz-osx-font-smoothing: grayscale;
+  -webkit-font-smoothing: antialiased;
+  font-family: 'Source Sans Pro', 'Helvetica Neue', Arial, sans-serif;
+  font-size: 15px;
+  letter-spacing: 0;
+  margin: 0;
+}
+
+/* main */
+main {
+  height: 100%;
+  position: relative;
+  width: 100%;
+}
+
+/* sidebar */
+.sidebar {
+  border-right: 1px solid rgba(0,0,0,.07);
+  bottom: 0;
+  overflow-y: auto;
+  position: absolute;
+  top: 0;
+  width: 300px;
+  z-index: 1;
+  padding-top: 40px;
+}
+
+.sidebar ul {
+  margin: 0;
+  padding: 0;
+}
+
+.sidebar ul, .sidebar ul li {
+  list-style: none;
+}
+
+.sidebar ul li a {
+  display: block;
+  border-bottom: none;
+}
+
+.sidebar ul li ul {
+  padding-left: 20px;
+}
+
+/* main content */
+.content {
+  bottom: 0;
+  left: 300px;
+  overflow-y: auto;
+  position: absolute;
+  right: 0;
+  top: 0;
+  overflow-x: hidden;
+  padding-top: 20px;
+}
+
+@media screen and (max-width: 600px) {
+  .sidebar {
+    left: -300px;
+  }
+
+  .content {
+    left: 0;
+  }
+}
+
+/* markdown content found on pages */
+.markdown-section {
+  position: relative;
+  margin: 0 auto;
+  max-width: 800px;
+  padding: 20px 15px 40px 15px;
+}
+
+.markdown-section * {
+  box-sizing: border-box;
+  -webkit-box-sizing: border-box;
+  font-size: inherit;
+}
+
+.markdown-section>:first-child {
+  margin-top: 0!important;
+}