diff --git a/css-responsive-nav.css b/css-responsive-nav.css
new file mode 100644
index 0000000..7885bd3
--- /dev/null
+++ b/css-responsive-nav.css
@@ -0,0 +1,165 @@
+#menu ul {
+ margin: 0;
+ padding: 0;
+}
+
+#menu .main-menu {
+ display: none;
+}
+
+#tm:checked + .main-menu {
+ display: block;
+}
+
+#menu input[type="checkbox"],
+#menu ul span.drop-icon {
+ display: none;
+}
+
+#menu li,
+#toggle-menu,
+#menu .sub-menu {
+ border-style: solid;
+ border-color: rgba(0, 0, 0, .05);
+}
+
+#menu li,
+#toggle-menu {
+ border-width: 0 0 1px;
+}
+
+#menu .sub-menu {
+ background-color: #000099;
+ border-width: 1px 1px 0;
+ margin: 0 1em;
+}
+
+#menu .sub-menu li:last-child {
+ border-width: 0;
+}
+
+#menu li,
+#toggle-menu,
+#menu a {
+ position: relative;
+ display: block;
+ color: white;
+ text-shadow: 1px 1px 0 rgba(0, 0, 0, .125);
+ text-decoration-line: none;
+}
+
+#menu,
+#toggle-menu {
+ background-color: #000099;
+}
+
+#toggle-menu,
+#menu a {
+ padding: 1em 1.5em;
+}
+
+#menu a {
+ transition: all .125s ease-in-out;
+ -webkit-transition: all .125s ease-in-out;
+}
+
+#menu a:hover {
+ background-color: #eaeaea;
+ color: #000;
+}
+
+#menu .sub-menu {
+ display: none;
+}
+
+#menu input[type="checkbox"]:checked + .sub-menu {
+ display: block;
+}
+
+#menu .sub-menu a:hover {
+ color: #000099;
+}
+
+#toggle-menu .drop-icon,
+#menu li label.drop-icon {
+ position: absolute;
+ right: 1.5em;
+ top: 1.25em;
+}
+
+#menu label.drop-icon, #toggle-menu span.drop-icon {
+ border-radius: 50%;
+ width: 1em;
+ height: 1em;
+ text-align: center;
+ background-color: rgba(0, 0, 0, .125);
+ text-shadow: 0 0 0 transparent;
+ color: rgba(255, 255, 255, .75);
+}
+
+#menu .drop-icon {
+ line-height: 1;
+}
+
+@media only screen and (max-width: 64em) and (min-width: 52.01em) {
+ #menu li {
+ width: 33.333%;
+ }
+
+ #menu .sub-menu li {
+ width: auto;
+ }
+}
+
+@media only screen and (min-width: 52em) {
+ #menu .main-menu {
+ display: block;
+ }
+
+ #toggle-menu,
+ #menu label.drop-icon {
+ display: none;
+ }
+
+ #menu ul span.drop-icon {
+ display: inline-block;
+ }
+
+ #menu li {
+ float: left;
+ border-width: 0 1px 0 0;
+ background-color: #000099;
+ }
+
+ #menu .sub-menu li {
+ float: none;
+ }
+
+ #menu .sub-menu {
+ border-width: 0;
+ margin: 0;
+ position: absolute;
+ top: 100%;
+ left: 0;
+ width: 12em;
+ z-index: 3000;
+ }
+
+ #menu .sub-menu,
+ #menu input[type="checkbox"]:checked + .sub-menu {
+ display: none;
+ }
+
+ #menu .sub-menu li {
+ border-width: 0 0 1px;
+ }
+
+ #menu .sub-menu .sub-menu {
+ top: 0;
+ left: 100%;
+ }
+
+ #menu li:hover > input[type="checkbox"] + .sub-menu {
+ display: block;
+ }
+}
diff --git a/menu.html b/menu.html
new file mode 100644
index 0000000..5c2ff21
--- /dev/null
+++ b/menu.html
@@ -0,0 +1,38 @@
+
+
+
+
+
+ Menu
+
+
+
+
+
+
+
+
+
+
--
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