body,html{padding:0;margin:0;font-family:Courier New,Courier,monospace}a{color:inherit;text-decoration:none}*{box-sizing:border-box}h1{text-align:center}.game{display:flex;flex-direction:column;align-items:center}.game__menu{text-align:center;font-size:24px;font-weight:600}.subtext{display:flex;flex-direction:column;grid-gap:8px;gap:8px;text-align:center;font-size:18px;padding:0 20px}.game__board{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:8px}.square{background-color:#eee;border-radius:8px;box-shadow:0 4px #ddd;text-align:center;font-size:64px;line-height:100px;font-weight:700;width:100px;height:100px;cursor:pointer}.square.highlight{background-color:#7fffd4;box-shadow:none}.disappearing-next{opacity:50%}.modal{width:250px;border-radius:16px;box-shadow:0 2px 5px 0 rgba(0,0,0,.2);display:flex;flex-direction:column;align-items:center;padding:24px;position:fixed;top:50%;background-color:#fff;left:50%;transform:translate(-50%,-50%) scale(0);transition:transform .2s}.modal.show{transform:translate(-50%,-50%) scale(1)}.modal__title{font-size:18px;font-weight:700;margin-bottom:16px}button{border:none;width:100%;height:36px;font-size:18px;font-weight:600}