update css

static/js/annotation.js

@@ -3,12 +3,15 @@
 oml.ui.annotation = function(data, $iframe) {
     var that = Ox.Element().attr({
         id: 'a-' + data.id
-    }).css({
+    }).addClass(
+        'OxSelectable'
+    ).css({
         backgroundColor: 'white',
+        borderBottom: '1px solid rgb(208, 208, 208)',
         color: 'black',
         fontFamily: 'serif',
-        fontSize: '16px',
-        lineHeight: '22px',
+        fontSize: '15px',
+        lineHeight: '20px',
         padding: '8px'
     }).html(data.text).on({
         click: function(event) {