add border to images in gallery

static/css/style.css

     font-size: 0.9em;
     padding: 10px;
     margin: 1em;
-    border-style: solid;
-    border-width: 2px;
-    border-color: purple; /* green; */ /* orange; */
+    border: 2px solid purple; /* green; */ /* orange; */
     border-radius: 10px;
 }
 
     border-radius: 10px;
     vertical-align: middle;
     margin: 3px 0 3px 0;
+    border: 2px solid purple; /* green; */ /* orange; */
 }
 
 .border .pic {