sets border-radius when vertical buttons have a single child button
sets border-radius when vertical buttons have a single child button

chlorm-forks/Semantic-UI,Semantic-Org/Semantic-UI,Dineshs91/Semantic-UI,chlorm-forks/Semantic-UI,martindale/Semantic-UI,Semantic-Org/Semantic-UI,Dineshs91/Semantic-UI,yangyitao/Semantic-UI,tarvos21/Semantic-UI,raphaelfruneaux/Semantic-UI,tarvos21/Semantic-UI,yangyitao/Semantic-UI,raphaelfruneaux/Semantic-UI,tarvos21/Semantic-UI,martindale/Semantic-UI