/* 2021.05 */

* { margin: 0; padding: 0; border: 0; box-sizing: border-box; outline : none; }
html { scroll-behavior: smooth; font-size: 62.5%; }
body { background: #efefef; color: #282828; display: grid; place-items: center; min-height: 100vh; width: 100vw; padding: 1rem; font-family: sans-serif; }
header { width: 30rem; }
img { width: 100%; height: auto; }