*, *::before { box-sizing: border-box; }

html { min-width: 320px; }

body, h1, h2, h3, h4, p, ul, ol { margin: 0; }

ul, ol { padding: 0; list-style: none; }

button, input, select, textarea { font: inherit; }

button, a { -webkit-tap-highlight-color: transparent; }

a { color: inherit; }

img { display: block; max-width: 100%; }

button { cursor: pointer; }