body{ display: flex; flex-direction: column; justify-content: space-around; align-items: center; background: linear-gradient(to right, hsl(200, 50%, 50%), hsl(30, 40%, 30%)); } table{ border: 4px black solid; font-size: 1.5rem; } td{ border: 2px black solid; padding: 5px; } button{ font-size: 2rem; border-radius: 10px; } input{ width: 60px; }