*,*:before,*:after{box-sizing:border-box}body{margin:0;-webkit-font-smoothing:antialiased}div+div,div+p,p+p,p+div,p+button,div+button,button+button,input+button{margin-top:8px}button+button,input+button{margin-top:0;margin-left:8px}[data-theme=dark]{background:#222;color:#fff;border-color:#555}[data-theme=dark] button{background:#e0e0e0;color:#111;border:none;padding:6px 16px;border-radius:6px;cursor:pointer}