Responsiveness, scrolling in link-wrapper

hp_assets/css/main.css

@@ -0,0 +1,58 @@
+html {height: 100%; width: 100%;}
+body {font-family: sans-serif; background: url("../img/sayagata-400px.png") repeat; z-index: 1; height: 100%; width: 100%; background-position: center; background-attachment: fixed;}
+
+.hidden {display: none;}
+.menu-item {display: none; z-index: 3;}
+
+#bg-overlay {    
+	position:fixed;
+    padding:0;
+    margin:0;
+    top:0;
+    left:0;
+    width: 100%;
+    height: 100%; 
+	background-color: #fff; 
+	opacity: 0; 
+	z-index: 2; 
+	transition: .3s all;
+}
+
+
+body.menu-shown #bg-overlay {opacity: 0.3;}
+
+#mobile-menu-wrap {z-index: 3; position: absolute; top: 15px; left: 15px;}
+#mobile-menu-wrap a {font-size: 20px;}
+
+.bg {border-radius: 5px; background-color: rgba(0, 0, 0, .5); padding: 20px;}
+.bg a {color: #fff;}
+
+#links-wrap {font-size: 80px;
+  position: fixed;
+  left: 50%;
+  top: 50%;
+
+  transform: translate(-50%, -50%);
+  
+  /*
+  Not even necessary really. 
+  e.g. Height could be left out!
+  */
+  width: -moz-fit-content;
+  width: -webkit-fit-content;
+  
+  
+  max-width: 80%;
+  max-height: 90%;
+  overflow: auto;
+  display: flex;
+  
+}
+#links-wrap a {transition: .3s all;}
+#links-wrap a:hover {color: #d3d3d3;}
+#links-wrap .link {display: inline-block; width: 33%; float: left; text-align: center;}
+
+#pic-info-wrap {color: #fff; font-size: 16px; position: absolute; bottom: 15px; left: 15px;}
+#pic-info-wrap a:hover, #pic-info-wrap a:active {color: #fff; text-decoration: none;}
+
+#clock-wrap {color: #fff; font-size: 30px; position: absolute; top: 15px; right: 15px;}