부트스트랩으로 이쁜 라디오 버튼

<div class="form-inline form-group start-start">
        <label  class="col-sm-12 control-label">관리자승인여부:</label>
            <div class="col-sm-6 btn-group btn-group-toggle" data-toggle="buttons" th:if="${product.adminApprovalYn.equals(true)}">

                 <label class="btn  btn-outline-primary center-center radio-pretty-btn">
                 <input checked="checked" class="form-control" name="adminApprovalYn"  type="radio" value="True">승인</label>
                <label class="btn btn-outline-primary center-center radio-pretty-btn">
                <input class="form-control"  name="adminApprovalYn"  type="radio" value="False">미승인</label>
    </div>
              

/* flex 관련 설정 start */
.start-start {
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
}


.center-center {
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* flex 관련 설정 end */