*{margin:0;padding:0;box-sizing:border-box}body{display:flex;height:100vh;background-color:#333;align-items:center;justify-content:center;text-align:center;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;color:#fff}h3{font-size:24px;font-weight:400}h3 span{font-weight:700}button{background-color:transparent;color:#fff;margin-top:15px;padding:8px;border:3px solid white;border-radius:15px}