Fix display on small screen devices.

- Remove useless margin on small screens.
- Better pills display on small screens.
- Revert to transparent background for section title.

kfet/static/kfet/css/index.css

@@ -154,6 +154,14 @@ textarea {
     display:block;
 }
 
+.content-left .buttons ul.nav-pills {
+    margin-bottom:5px;
+}
+
+.content-left .buttons ul.nav-pills li {
+    margin:0 0 -5px;
+}
+
 .content-left-top.frozen-account {
     background:#000FBA;
     color:#fff;
@@ -202,14 +210,6 @@ textarea {
     padding-bottom:15px;
 }
 
-.content-right-block > div:not(.buttons-title) {
-    background:#fff;
-}
-
-.content-right-block-transparent > div:not(.buttons-title) {
-    background-color: transparent;
-}
-
 .content-right-block .buttons-title {
     position:absolute;
     top:8px;