Merge pull request topcoderinc#426 from topcoderinc/issue-274

fixes issue 274

Author: standlove

src/styles.scss

@@ -49,6 +49,11 @@ mat-form-field {
   margin: 0;
 }
 
+// center align modal action buttons
+.mat-dialog-actions {
+  justify-content: center;
+}
+
 // temporary fix for expansion panels inside mat dialog
 .mat-dialog-content .mat-expansion-panel {