impr(search): style the variable search
impr(search): style the variable search

related to CAM-3895

kingtec/camunda-tasklist-ui,tcrossland/camunda-bpm-webapp,kingtec/camunda-tasklist-ui,nagyistoce/camunda-tasklist-ui,TitanUser/camunda-bpm-webapp,xlinur/camunda-bpm-webapp,nagyistoce/camunda-tasklist-ui,tcrossland/camunda-bpm-webapp,xlinur/camunda-bpm-webapp,TitanUser/camunda-bpm-webapp,xlinur/camunda-bpm-webapp,TitanUser/camunda-bpm-webapp,tcrossland/camunda-bpm-webapp