Fix position top

nav.css

@@ -0,0 +1,151 @@
+/* Global */
+/* Content Container */
+/* Content box */
+/* Navigation */
+/* Colors */
+#nav-side {
+  user-select: none;
+  width: 175px;
+  position: fixed;
+  top: 79px;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  z-index: 0;
+  overflow-y: auto;
+  font-size: 0.8em;
+  background: #2F2F2F; }
+  #nav-side input {
+    display: none; }
+    #nav-side input:checked + ul .max {
+      display: inherit; }
+    #nav-side input:checked + ul .min {
+      display: none; }
+    #nav-side input:checked + ul > li:nth-child(n+2) {
+      display: inherit; }
+  #nav-side input + ul .max {
+    display: none; }
+  #nav-side input + ul .min {
+    display: inherit; }
+  #nav-side input + ul > li:nth-child(n+2) {
+    display: none; }
+  #nav-side > li li {
+    border-top: 1px solid #3f3f3f;
+    border-bottom: 1px solid #252525;
+    color: #fff; }
+    #nav-side > li li:not(:first-child) {
+      background: #353535; }
+    #nav-side > li li:first-child {
+      border-bottom: 1px solid #1a1a1a; }
+    #nav-side > li li:first-child {
+      padding: 7px 0 7px 7px; }
+    #nav-side > li li a {
+      display: block;
+      padding: 7px 0 7px 7px; }
+      #nav-side > li li a:hover {
+        background: #3F3F3F; }
+  #nav-side li:last-child li:last-child {
+    border-bottom: none; }
+  #nav-side .max, #nav-side .min {
+    float: right; }
+  #nav-side i {
+    margin-right: 5px; }
+  #nav-side::-webkit-scrollbar-track {
+    box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.3);
+    background-color: #F5F5F5; }
+  #nav-side::-webkit-scrollbar {
+    width: 12px;
+    background-color: #F5F5F5; }
+  #nav-side::-webkit-scrollbar-thumb {
+    box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.3);
+    background-color: #555; }
+
+.nav-trigger {
+  position: absolute;
+  clip: rect(0, 0, 0, 0); }
+
+label[for="nav-trigger"] {
+  font-size: 2.0em;
+  height: 30px;
+  width: 30px;
+  cursor: pointer; }
+
+.nav-trigger:checked ~ main {
+  width: calc(100% - 175px);
+  left: 175px; }
+
+.nav-top {
+  user-select: none;
+  margin-top: 5px;
+  display: block;
+  background: #ffffff;
+  border: 1px solid #b7b7b7;
+  -moz-box-shadow: inset 0px 1px 0px 0px #ffffff;
+  -webkit-box-shadow: inset 0px 1px 0px 0px #ffffff;
+  box-shadow: inset 0px 1px 0px 0px #ffffff; }
+  .nav-top > li {
+    -moz-box-shadow: inset 0px 1px 0px 0px #ffffff;
+    -webkit-box-shadow: inset 0px 1px 0px 0px #ffffff;
+    box-shadow: inset 0px 1px 0px 0px #ffffff;
+    text-shadow: 1px 1px 1px #ffffff; }
+    .nav-top > li:first-child {
+      -moz-box-shadow: inset 1px 1px 0px 0px #ffffff;
+      -webkit-box-shadow: inset 1px 1px 0px 0px #ffffff;
+      box-shadow: inset 1px 1px 0px 0px #ffffff; }
+
+.nav-top li {
+  background: #fff;
+  display: inline-block;
+  margin-right: -4px;
+  position: relative;
+  cursor: pointer; }
+
+.nav-top > li > a {
+  display: inline-block;
+  padding: 10px 10px; }
+
+.nav-top li:hover {
+  background: #555;
+  color: #fff;
+  text-shadow: 0 -1px 0 #000; }
+
+.nav-top li > ul {
+  padding: 0;
+  position: absolute;
+  top: 36px;
+  left: 0;
+  width: 150px;
+  -webkit-box-shadow: none;
+  -moz-box-shadow: none;
+  box-shadow: none;
+  display: none;
+  opacity: 0;
+  visibility: hidden; }
+
+.nav-top li > ul li {
+  background: #555;
+  display: block;
+  color: #fff;
+  text-shadow: 0 -1px 0 #000; }
+
+.nav-top li > ul li:hover {
+  background: #666; }
+
+.nav-top li:hover > ul {
+  display: block;
+  opacity: 1;
+  visibility: visible; }
+
+@media screen and (max-width: 600px) {
+  .nav-trigger:checked ~ main {
+    width: 100%;
+    left: 0; }
+
+  .nav-trigger:not(:checked) ~ main {
+    width: 0;
+    padding-right: 0; }
+
+  #nav-side {
+    width: 100%; } }
+
+/*# sourceMappingURL=nav.css.map */

nav.scss

@@ -4,7 +4,7 @@
     user-select: none;
     width: 175px;
     position: fixed;
-    top: 75px;
+    top: 79px;
     right: 0;
     bottom: 0;
     left: 0;

styles.css

@@ -131,6 +131,12 @@ article {
 .wf-100 {
   width: 100%; }
 
+.wf-80 {
+  width: 80%; }
+
+.wf-20 {
+  width: 20%; }
+
 .wf-50 {
   width: 50%; }
 
@@ -4182,7 +4188,7 @@ ul.h-list li {
   user-select: none;
   width: 175px;
   position: fixed;
-  top: 75px;
+  top: 79px;
   right: 0;
   bottom: 0;
   left: 0;