html { min-width:320px; scroll-behavior:smooth; }
body { margin:0; min-width:320px; }
button, input { font:inherit; }
img, svg { max-width:100%; }
@media (prefers-reduced-motion:reduce) {
    html { scroll-behavior:auto; }
    *, *:before, *:after { animation-duration:.01ms !important; transition-duration:.01ms !important; }
}