Add tooltip styling

src/assets/css/components.css

@@ -128,6 +128,19 @@
 
 p + .adoptables { margin-top: 1em; }
 
+/* Tooltips */
+.tooltip { display: none; }
+.tipcontainer { position: relative; }
+
+.tipactivator:hover + .tooltip,
+.tipactivator:focus + .tooltip {
+    display: inline-block;
+    position: absolute;
+    background-color: var(--clr-quote-bg);
+    border: 0.15em solid var(--clr-title-border);
+    padding: 0.25em 0.5em;
+}
+
 /* Web button lists */
 .web-btn-wrapper {
     display: flex;