HTML HELLO slide hover CSS /* 버튼 */ .button-box { /* height: 100vh; */ /* display: flex; justify-content: center; align-items: center; */ } .button-box .btn { font-size: 25px; padding: 15px 30px; color: #000; border: 3px solid #000; border-radius: 30px; text-transform: uppercase; letter-spacing: 4px; transition: all 0.4s; } .button-box .btn:focus { outline: none; } .button-box .btn:hover { backg..