adjust styles for affix of search result page

resource/css/_search.scss

@@ -80,8 +80,8 @@
     nav {
       &.affix {
         top: 8px;
-        width: 33.33333%;
-        padding-right: 30px;
+        width: 32%;
+        padding-right: 0;
         padding-bottom: 50px;
         height: 100%;
         overflow-y: scroll;