Modern CSS Reset

new-reset.css

@layer reset {
  :root {
    --_body-font-family: var(--reset-body-font-family, sans-serif);
    --_heading-font-family: var(--reset-heading-font-family, serif);
    --_code-font-family: var(--reset-code-font-family, monospace);

    --_text-max-width: var(--reset-text-max-width, 65ch);

    --_details-duration: var(--reset-details-duration, 175ms);
    --_details-timing: var(--reset-details-timing, ease-out);
  }

  :is(*) {
    min-inline-size: 0;
  }

  :is(*, *::before, *::after) {
    box-sizing: inherit;
  }

  :is(html) {
    font-family: var(--_body-font-family);
    text-size-adjust: none;
    box-sizing: border-box;
    interpolate-size: allow-keywords;
  }

  :is(body) {
    margin: 0;
    min-height: 100dvh;
    line-height: 1.5;
  }

  :is(h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd) {
    margin-block-start: 0;
  }

  :is(h1, h2, h3, h4, h5, h6, button, input, label) {
    line-height: 1;
  }

  :is(h1, h2, h3, h4, h5, h6) {
    font-family: var(--_heading-font-family);
    text-wrap: balance;
  }

  :is(hr) {
    border: none;
    border-block-end: 1px solid;
    inline-size: 100%;
  }

  :is(p, li, figcaption) {
    text-wrap: pretty;
    max-width: var(--_text-max-width);
  }

  :is(fieldset) {
    border-style: solid;
    border-width: 1px;
    margin: 0;
  }

  :is(legend) {
    padding-inline: 1ch;
  }

  :is(input, button, textarea, select) {
    font-family: inherit;
    font-size: inherit;
  }

  :is(button, select):not(:disabled) {
    cursor: pointer;
  }

  :is(a:not([class])) {
    text-decoration: underline;
  }

  :is(ul[role="list"]:not([class]), ol[role="list"]):not([class]) {
    list-style-type: "";
    margin: 0;
    padding: 0;
  }

  :is(blockquote, menu) {
    margin: 0;
    padding: 0;
  }

  :is(img, picture) {
    max-width: 100%;
    display: block;
  }

  :is(code, pre, kbd) {
    font-family: var(--_code-font-family);
  }

  :is(table, math, time[datetime*=":"]) {
    font-variant-numeric: tabular-nums lining-nums;
  }

  :is(table) {
    border-collapse: collapse;
  }

  :is(summary) {
    cursor: pointer;
  }

  :is(:target) {
    scroll-margin-block-start: 5rlh;
  }

  @media (prefers-reduced-motion: no-preference) {
    :is(html) {
      scroll-behavior: smooth;
    }

    :is(details) {
      interpolate-size: allow-keywords;

      &::details-content {
        block-size: 0;
        overflow-y: clip;
        transition-property: content-visibility, block-size;
        transition-duration: var(--_details-duration);
        transition-timing-function: var(--_details-timing);
        transition-behavior: allow-discrete;
      }

      &[open] {
        &::details-content {
          block-size: auto;

          @starting-style {
            opacity: 0;
            block-size: 0;
          }
        }
      }
    }
  }
}

reset.css

@layer reset {
  /*
    Josh's Custom CSS Reset
    https://www.joshwcomeau.com/css/custom-css-reset/
  */

  /* Modified by Michael Richins */
  :where(*, *::before, *::after) {
    box-sizing: border-box;
  }

  :where(*) {
    margin: 0;
    font-size: unset;
  }

  :where(html, body) {
    margin: 0;
    min-block-size: 100vh;
    min-block-size: 100dvh;
    scroll-behavior: smooth;
  }

  :where(body) {
    line-height: 1.5;
    font-smooth: always;
    -moz-osx-font-smoothing: grayscale;
    -webkit-font-smoothing: antialiased;
  }

  :where(img, picture, video, canvas, svg) {
    display: block;
    max-inline-size: 100%;
  }

  :where(ul[role='list'], ol[role='list']) {
    list-style: none;
  }

  :where(input, button, textarea, select) {
    font: inherit;
  }

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

  :where(h1, h2, h3, h4, h5, h6) {
    text-wrap: balance;
  }

  :where(a:not([class])) {
    text-decoration-skip-ink: auto;
    color: currentColor;
  }

  @media (prefers-reduced-motion: reduce) {
    :where(*) {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto !important;
    }
  }
}