Update stylesheet from our waveform-playlist fork

app/assets/waveform-playlist.css

@@ -104,7 +104,8 @@
     text-align: center; }
   .playlist .annotations .annotation-box {
     border: 2px dashed grey;
-    padding: 0 10px; }
+    padding: 0 10px;
+    box-sizing: border-box; }
     .playlist .annotations .annotation-box .resize-handle {
       background: grey;
       opacity: 0.3;
@@ -156,5 +157,3 @@
             cursor: pointer; }
   .playlist .annotations .current {
     background-color: #EBF4F6; }
-
-/*# sourceMappingURL=test.css.map */