Code cosmetics

cps/static/css/popup.css

@@ -1,4 +1,5 @@
 /* http://davidwalsh.name/css-tooltips */
+
 /* base CSS element */
 .popup {
   background: #eee;
@@ -9,10 +10,8 @@
   position: fixed;
   max-width: 300px;
   font-size: 12px;
-  
   display: none;
   margin-left: 2px;
-  
   margin-top: 30px;
 }
 
@@ -38,7 +37,7 @@
 }
 
 /* below */
-.popup:before {
+.popup::before {
   position: absolute;
   display: inline-block;
   border-bottom: 10px solid #eee;
@@ -51,7 +50,7 @@
   content: '';
 }
 
-.popup:after {
+.popup::after {
   position: absolute;
   display: inline-block;
   border-bottom: 9px solid #eee;
@@ -64,33 +63,31 @@
 }
 
 /* above */
-.popup.above:before {
+.popup.above::before {
   border-bottom: none;
   border-top: 10px solid #eee;
   border-top-color: rgba(0, 0, 0, 0.2);
   top: 100%;
 }
 
-.popup.above:after {
+.popup.above::after {
   border-bottom: none;
   border-top: 9px solid #eee;
   top: 100%;
 }
 
-.popup.left:before,
-.popup.left:after
-{
+.popup.left::before,
+.popup.left::after {
   left: 20px;
 }
 
-.popup.right:before,
-.popup.right:after
-{
+.popup.right::before,
+.popup.right::after {
   left: auto;
   right: 20px;
 }
 
-
-.popup.show, .popup.on {
+.popup.show,
+.popup.on {
   display: block;
-}
+}