.coupons-box{ height: 100%; #coupons { height: 100%; .tab { width: 100%; height: 44px; line-height: 44px; background-color: #fff; display: flex; justify-content: space-around; font-size: 14px; color: #555; a { display: inline-block; height: 100%; } } .btm-border { background-color: #f5f5f5; width: 100%; height: 8px; } .tab-active { color: #09f; border-bottom: 1px solid #09f; } .coupons-container { height: 100%; } } }