CSS Reset

style.css

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

* {
  padding: 0;
  margin: 0;
  line-height: calc(1em + 0.5rem);
}

html, body {
  height: 100%;
}

html {
  font-size: 62.5%;
  scroll-behavior: smooth;
}

body {
  -webkit-font-smoothing: antialiased;
  /*
  background: DEFAULT_COLOR;
  color: DEFAULT_COLOR;
  font-family: "IMPORTED_FONT", Arial, Helvetica, sans-serif;
  */
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
  background: transparent;
  border: transparent;
}

p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
}

ul {
  list-style: none;
}

a {
  text-decoration: none;
  /*
  color: LINK_DEFAULT-COLOR;
  */
}

a:hover {
  /*  
  color: LINK_DEFAULT-COLOR_HOVER;
  */
}

#root, #__next {
  isolation: isolate;
}

@media (max-width: 768px) {
  html {
    font-size: 60%;
  }
}

@media (max-width: 425px) {
  html {
    font-size: 57.5%;
  }
}

@media (max-width: 375px) {
  html {
    font-size: 55%;
  }
}

@media (max-width: 320px) {
  html {
    font-size: 52.5%;
  }
}

@media (max-width: 280px) {
  html {
    font-size: 50%;
  }
}

source: https://www.joshwcomeau.com/css/custom-css-reset/