Very simple full CSS reset

reset.css

/* Simplest CSS Reset */

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

* {
  margin: 0;
  padding: 0;
  font: inherit;
}

html {
  color-scheme: dark light;
}

body {
  min-height: 100vh;
}
  
img, picture, svg, video {
  display: block;
  max-width: 100%;
}

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