Merge pull request #148 from dsernst/tailwind-preflight-opt-in

Opt-in <TailwindPreflight />

pages/intro.tsx

@@ -0,0 +1 @@
+export { IntroPage as default } from '../src/intro/IntroPage'

src/TailwindPreflight.tsx

@@ -0,0 +1,350 @@
+// Lightly adapted from node_modules/tailwindcss/lib/css/preflight.css
+// for importing into pages one-by-one
+//
+// Key change:
+//  6 instances: theme($1) -> $1
+//  Resolving variable gray-400 to its hex
+
+export const TailwindPreflight = () => {
+  return (
+    <style global jsx>{`
+      /*
+      1. Prevent padding and border from affecting element width. (https://github.com/mozdevs/cssremedy/issues/4)
+      2. Allow adding a border to an element by just adding a border-width. (https://github.com/tailwindcss/tailwindcss/pull/116)
+      */
+      *,
+      ::before,
+      ::after {
+        box-sizing: border-box; /* 1 */
+        border-width: 0; /* 2 */
+        border-style: solid; /* 2 */
+        border-color: #dae4e9; /* 2 */
+      }
+
+      ::before,
+      ::after {
+        --tw-content: '';
+      }
+
+      /*
+      1. Use a consistent sensible line-height in all browsers.
+      2. Prevent adjustments of font size after orientation changes in iOS.
+      3. Use a more readable tab size.
+      4. Use the 'sans' font-family by default.
+      */
+      html {
+        line-height: 1.5; /* 1 */
+        -webkit-text-size-adjust: 100%; /* 2 */
+        -moz-tab-size: 4; /* 3 */
+        tab-size: 4; /* 3 */
+        font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue',
+          Arial, 'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji'; /* 4 */
+      }
+
+      /*
+      1. Remove the margin in all browsers.
+      2. Inherit line-height from 'html' so users can set them as a class directly on the 'html' element.
+      */
+      body {
+        margin: 0; /* 1 */
+        line-height: inherit; /* 2 */
+      }
+
+      /*
+      1. Add the correct height in Firefox.
+      2. Correct the inheritance of border color in Firefox. (https://bugzilla.mozilla.org/show_bug.cgi?id=190655)
+      3. Ensure horizontal rules are visible by default.
+      */
+      hr {
+        height: 0; /* 1 */
+        color: inherit; /* 2 */
+        border-top-width: 1px; /* 3 */
+      }
+
+      /*
+      Add the correct text decoration in Chrome, Edge, and Safari.
+      */
+      abbr:where([title]) {
+        text-decoration: underline dotted;
+      }
+
+      /*
+      Remove the default font size and weight for headings.
+      */
+      h1,
+      h2,
+      h3,
+      h4,
+      h5,
+      h6 {
+        font-size: inherit;
+        font-weight: inherit;
+      }
+
+      /*
+      Reset links to optimize for opt-in styling instead of opt-out.
+      */
+      a {
+        color: inherit;
+        text-decoration: inherit;
+      }
+
+      /*
+      Add the correct font weight in Edge and Safari.
+      */
+      b,
+      strong {
+        font-weight: bolder;
+      }
+
+      /*
+      1. Use the 'mono' font family by default.
+      2. Correct the odd 'em' font sizing in all browsers.
+      */
+      code,
+      kbd,
+      samp,
+      pre {
+        font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace; /* 1 */
+        font-size: 1em; /* 2 */
+      }
+
+      /*
+      Add the correct font size in all browsers.
+      */
+      small {
+        font-size: 80%;
+      }
+
+      /*
+      Prevent 'sub' and 'sup' elements from affecting the line height in all browsers.
+      */
+      sub,
+      sup {
+        font-size: 75%;
+        line-height: 0;
+        position: relative;
+        vertical-align: baseline;
+      }
+
+      sub {
+        bottom: -0.25em;
+      }
+
+      sup {
+        top: -0.5em;
+      }
+
+      /*
+      1. Remove text indentation from table contents in Chrome and Safari. (https://bugs.chromium.org/p/chromium/issues/detail?id=999088, https://bugs.webkit.org/show_bug.cgi?id=201297)
+      2. Correct table border color inheritance in all Chrome and Safari. (https://bugs.chromium.org/p/chromium/issues/detail?id=935729, https://bugs.webkit.org/show_bug.cgi?id=195016)
+      3. Remove gaps between table borders by default.
+      */
+      table {
+        text-indent: 0; /* 1 */
+        border-color: inherit; /* 2 */
+        border-collapse: collapse; /* 3 */
+      }
+
+      /*
+      1. Change the font styles in all browsers.
+      2. Remove the margin in Firefox and Safari.
+      3. Remove default padding in all browsers.
+      */
+      button,
+      input,
+      optgroup,
+      select,
+      textarea {
+        font-family: inherit; /* 1 */
+        font-size: 100%; /* 1 */
+        font-weight: inherit; /* 1 */
+        line-height: inherit; /* 1 */
+        color: inherit; /* 1 */
+        margin: 0; /* 2 */
+        padding: 0; /* 3 */
+      }
+
+      /*
+      Remove the inheritance of text transform in Edge and Firefox.
+      */
+      button,
+      select {
+        text-transform: none;
+      }
+
+      /*
+      1. Correct the inability to style clickable types in iOS and Safari.
+      2. Remove default button styles.
+      */
+      button,
+      [type='button'],
+      [type='reset'],
+      [type='submit'] {
+        -webkit-appearance: button; /* 1 */
+        background-color: transparent; /* 2 */
+        background-image: none; /* 2 */
+      }
+
+      /*
+      Use the modern Firefox focus style for all focusable elements.
+      */
+      :-moz-focusring {
+        outline: auto;
+      }
+
+      /*
+      Remove the additional ':invalid' styles in Firefox. (https://github.com/mozilla/gecko-dev/blob/2f9eacd9d3d995c937b4251a5557d95d494c9be1/layout/style/res/forms.css#L728-L737)
+      */
+      :-moz-ui-invalid {
+        box-shadow: none;
+      }
+
+      /*
+      Add the correct vertical alignment in Chrome and Firefox.
+      */
+      progress {
+        vertical-align: baseline;
+      }
+
+      /*
+      Correct the cursor style of increment and decrement buttons in Safari.
+      */
+      ::-webkit-inner-spin-button,
+      ::-webkit-outer-spin-button {
+        height: auto;
+      }
+
+      /*
+      1. Correct the odd appearance in Chrome and Safari.
+      2. Correct the outline style in Safari.
+      */
+      [type='search'] {
+        -webkit-appearance: textfield; /* 1 */
+        outline-offset: -2px; /* 2 */
+      }
+
+      /*
+      Remove the inner padding in Chrome and Safari on macOS.
+      */
+      ::-webkit-search-decoration {
+        -webkit-appearance: none;
+      }
+
+      /*
+      1. Correct the inability to style clickable types in iOS and Safari.
+      2. Change font properties to 'inherit' in Safari.
+      */
+      ::-webkit-file-upload-button {
+        -webkit-appearance: button; /* 1 */
+        font: inherit; /* 2 */
+      }
+
+      /*
+      Add the correct display in Chrome and Safari.
+      */
+      summary {
+        display: list-item;
+      }
+
+      /*
+      Removes the default spacing and border for appropriate elements.
+      */
+      blockquote,
+      dl,
+      dd,
+      h1,
+      h2,
+      h3,
+      h4,
+      h5,
+      h6,
+      hr,
+      figure,
+      p,
+      pre {
+        margin: 0;
+      }
+
+      fieldset {
+        margin: 0;
+        padding: 0;
+      }
+
+      legend {
+        padding: 0;
+      }
+
+      ol,
+      ul,
+      menu {
+        list-style: none;
+        margin: 0;
+        padding: 0;
+      }
+
+      /*
+      Prevent resizing textareas horizontally by default.
+      */
+      textarea {
+        resize: vertical;
+      }
+
+      /*
+      1. Reset the default placeholder opacity in Firefox. (https://github.com/tailwindlabs/tailwindcss/issues/3300)
+      2. Set the default placeholder color to gray-400.
+      */
+      input::placeholder,
+      textarea::placeholder {
+        opacity: 1; /* 1 */
+        color: #9ca3af; /* 2 */
+      }
+
+      /*
+      Set the default cursor for buttons.
+      */
+      button,
+      [role='button'] {
+        cursor: pointer;
+      }
+
+      /*
+      Make sure disabled buttons don't get the pointer cursor.
+      */
+      :disabled {
+        cursor: default;
+      }
+
+      /*
+      1. Make replaced elements 'display: block' by default. (https://github.com/mozdevs/cssremedy/issues/14)
+      2. Add 'vertical-align: middle' to align replaced elements more sensibly by default. (https://github.com/jensimmons/cssremedy/issues/14#issuecomment-634934210)
+        This can trigger a poorly considered lint error in some tools but is included by design.
+      */
+      img,
+      svg,
+      video,
+      canvas,
+      audio,
+      iframe,
+      embed,
+      object {
+        display: block; /* 1 */
+        vertical-align: middle; /* 2 */
+      }
+
+      /*
+      Constrain images and videos to the parent width and preserve their intrinsic aspect ratio. (https://github.com/mozdevs/cssremedy/issues/14)
+      */
+      img,
+      video {
+        max-width: 100%;
+        height: auto;
+      }
+
+      /* Make elements with the HTML hidden attribute stay hidden by default */
+      [hidden] {
+        display: none;
+      }
+    `}</style>
+  )
+}