added tagging function as requested in issue #7

files/global.css

@@ -131,14 +131,18 @@ figure {
   text-decoration: none;
 }
 
-.navbar .title {
+.navbar .navleft {
+  float: left;
+}
+
+.navbar .navcenter {
   position: absolute;
   left: 50%;
   transform: translateX(-50%);
 }
 
-.navbar .license {
-  float: right;
+.navbar .navright {
+  float: right
 }
 
 .navbar li .header {
@@ -150,18 +154,28 @@ figure {
 
 .tooltip {
   position: relative;
+  cursor: pointer;
 }
 
 .tooltip .tooltiptext {
   display: none;
+  cursor: default;
   width: max-content;
   position: absolute;
   z-index: 100;
   opacity: 0;
   transition: opacity 0.3s;
+  float: left;
+}
+
+.tooltip .infotext {
   padding: 12px;
 }
 
+.tooltip .tagdropdown {
+  padding: 0;
+}
+
 .tooltip:hover .tooltiptext {
   display: block;
   opacity: 1;
@@ -172,6 +186,22 @@ figure {
   opacity: 1;
 }
 
+.tooltip .tooltiptext .tagentry {
+  list-style: none;
+  width: 100%;
+  cursor: pointer;
+  margin: 0;
+  padding: 0;
+}
+
+.tooltip .tooltiptext .tagentry label {
+  cursor: pointer;
+  width: 100%;
+  height: 100%;
+  padding: 12px;
+  display: block;
+}
+
 .column {
   -ms-flex: 12.5%;
   flex: 12.5%;