fixed button icon alignment

Change-Id: Ie5bd4342fde5809a9ad793bfedf9079b0758de59
Signed-off-by: Michael Davis <michael.s.davis@ibm.com>
diff --git a/app/common/styles/base/buttons.scss b/app/common/styles/base/buttons.scss
index 93848be..3793a84 100644
--- a/app/common/styles/base/buttons.scss
+++ b/app/common/styles/base/buttons.scss
@@ -115,5 +115,6 @@
     display: inline-block;
     left: 11px;
     top: 5px;
+    line-height: 1;
   }
 }
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