event-logs: redesign search and filtering function

Proposed changes were based on user feedback from design team.

Change-Id: Idab1418e1b4d11770095c865eb03769f278a03bc
Signed-off-by: Michael Davis <michael.s.davis@ibm.com>
diff --git a/app/common/styles/components/form-elements.scss b/app/common/styles/components/form-elements.scss
index f4be1b1..e101385 100644
--- a/app/common/styles/components/form-elements.scss
+++ b/app/common/styles/components/form-elements.scss
@@ -1,14 +1,15 @@
 // Drop downs
 .dropdown__button {
   position: relative;
-  padding: 1em;
+  padding: .5em .8em;
   margin-top: -10px;
+  border: 1px solid $lightgrey;
   &.active,
   &:hover {
     background: $dropdown__focus-bg;
   }
   &:after {
-    content: '\276F';
+    content: '\25B8';
     display: inline-block;
     margin-left: 5px;
     font-size: .8em;
@@ -20,7 +21,6 @@
 .dropdown__wrapper {
   position: relative;
   display: inline-block;
-  float: left;
 }
 
 .dropdown__list {