Bring most of Tailwind's preflight.css back

webview-ui/src/index.css

@@ -1,10 +1,21 @@
-/* @import "tailwindcss"; */
+/**
+ * Normally we'd import tailwind with the following:
+ *
+ * @import "tailwindcss";
+ *
+ * However, we need to customize the preflight styles since the extension's
+ * current UI assumes there's no CSS resetting or normalization.
+ *
+ * We're excluding tailwind's default preflight and importing our own, which
+ * are based on the original (https://github.com/tailwindlabs/tailwindcss/blob/main/packages/tailwindcss/preflight.css).
+ *
+ * Reference: https://tailwindcss.com/docs/preflight
+ */
 
 @layer theme, base, components, utilities;
 
 @import "tailwindcss/theme.css" layer(theme);
-/* https://tailwindcss.com/docs/preflight */
-/* @import "tailwindcss/preflight.css" layer(base); */
+@import "./preflight.css" layer(base);
 @import "tailwindcss/utilities.css" layer(utilities);
 
 @plugin "tailwindcss-animate";

webview-ui/src/preflight.css

@@ -0,0 +1,383 @@
+/*
+  1. Prevent padding and border from affecting element width. (https://github.com/mozdevs/cssremedy/issues/4)
+  2. Remove default margins and padding
+  3. Reset all borders.
+*/
+
+*,
+::after,
+::before,
+::backdrop,
+::file-selector-button {
+	box-sizing: border-box; /* 1 */
+	/* margin: 0; */ /* 2 */
+	padding: 0; /* 2 */
+	border: 0 solid; /* 3 */
+}
+
+/*
+  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 user's configured `sans` font-family by default.
+  5. Use the user's configured `sans` font-feature-settings by default.
+  6. Use the user's configured `sans` font-variation-settings by default.
+  7. Disable tap highlights on iOS.
+*/
+
+html,
+:host {
+	line-height: 1.5; /* 1 */
+	-webkit-text-size-adjust: 100%; /* 2 */
+	tab-size: 4; /* 3 */
+	font-family: var(
+		--default-font-family,
+		ui-sans-serif,
+		system-ui,
+		sans-serif,
+		"Apple Color Emoji",
+		"Segoe UI Emoji",
+		"Segoe UI Symbol",
+		"Noto Color Emoji"
+	); /* 4 */
+	font-feature-settings: var(--default-font-feature-settings, normal); /* 5 */
+	font-variation-settings: var(--default-font-variation-settings, normal); /* 6 */
+	-webkit-tap-highlight-color: transparent; /* 7 */
+}
+
+/*
+  Inherit line-height from `html` so users can set them as a class directly on the `html` element.
+*/
+
+body {
+	line-height: inherit;
+}
+
+/*
+  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. Reset the default border style to a 1px solid border.
+*/
+
+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]) {
+	-webkit-text-decoration: underline dotted;
+	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;
+	-webkit-text-decoration: inherit;
+	text-decoration: inherit;
+}
+
+/*
+  Add the correct font weight in Edge and Safari.
+*/
+
+b,
+strong {
+	font-weight: bolder;
+}
+
+/*
+  1. Use the user's configured `mono` font-family by default.
+  2. Use the user's configured `mono` font-feature-settings by default.
+  3. Use the user's configured `mono` font-variation-settings by default.
+  4. Correct the odd `em` font sizing in all browsers.
+*/
+
+code,
+kbd,
+samp,
+pre {
+	font-family: var(
+		--default-mono-font-family,
+		ui-monospace,
+		SFMono-Regular,
+		Menlo,
+		Monaco,
+		Consolas,
+		"Liberation Mono",
+		"Courier New",
+		monospace
+	); /* 4 */
+	font-feature-settings: var(--default-mono-font-feature-settings, normal); /* 5 */
+	font-variation-settings: var(--default-mono-font-variation-settings, normal); /* 6 */
+	font-size: 1em; /* 4 */
+}
+
+/*
+  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 */
+}
+
+/*
+  Use the modern Firefox focus style for all focusable elements.
+*/
+
+:-moz-focusring {
+	outline: auto;
+}
+
+/*
+  Add the correct vertical alignment in Chrome and Firefox.
+*/
+
+progress {
+	vertical-align: baseline;
+}
+
+/*
+  Add the correct display in Chrome and Safari.
+*/
+
+summary {
+	display: list-item;
+}
+
+/*
+  Make lists unstyled by default.
+*/
+
+ol,
+ul,
+menu {
+	list-style: none;
+}
+
+/*
+  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;
+}
+
+/*
+  1. Inherit font styles in all browsers.
+  2. Remove border radius in all browsers.
+  3. Remove background color in all browsers.
+  4. Ensure consistent opacity for disabled states in all browsers.
+*/
+
+button,
+input,
+select,
+optgroup,
+textarea,
+::file-selector-button {
+	font: inherit; /* 1 */
+	font-feature-settings: inherit; /* 1 */
+	font-variation-settings: inherit; /* 1 */
+	letter-spacing: inherit; /* 1 */
+	color: inherit; /* 1 */
+	border-radius: 0; /* 2 */
+	background-color: transparent; /* 3 */
+	opacity: 1; /* 4 */
+}
+
+/*
+  Restore default font weight.
+*/
+
+:where(select:is([multiple], [size])) optgroup {
+	font-weight: bolder;
+}
+
+/*
+  Restore indentation.
+*/
+
+:where(select:is([multiple], [size])) optgroup option {
+	padding-inline-start: 20px;
+}
+
+/*
+  Restore space after button.
+*/
+
+::file-selector-button {
+	margin-inline-end: 4px;
+}
+
+/*
+  1. Reset the default placeholder opacity in Firefox. (https://github.com/tailwindlabs/tailwindcss/issues/3300)
+  2. Set the default placeholder color to a semi-transparent version of the current text color.
+*/
+
+::placeholder {
+	opacity: 1; /* 1 */
+	color: color-mix(in oklab, currentColor 50%, transparent); /* 2 */
+}
+
+/*
+  Prevent resizing textareas horizontally by default.
+*/
+
+textarea {
+	resize: vertical;
+}
+
+/*
+  Remove the inner padding in Chrome and Safari on macOS.
+*/
+
+::-webkit-search-decoration {
+	-webkit-appearance: none;
+}
+
+/*
+  1. Ensure date/time inputs have the same height when empty in iOS Safari.
+  2. Ensure text alignment can be changed on date/time inputs in iOS Safari.
+*/
+
+::-webkit-date-and-time-value {
+	min-height: 1lh; /* 1 */
+	text-align: inherit; /* 2 */
+}
+
+/*
+  Prevent height from changing on date/time inputs in macOS Safari when the input is set to `display: block`.
+*/
+
+::-webkit-datetime-edit {
+	display: inline-flex;
+}
+
+/*
+  Remove excess padding from pseudo-elements in date/time inputs to ensure consistent height across browsers.
+*/
+
+::-webkit-datetime-edit-fields-wrapper {
+	padding: 0;
+}
+
+::-webkit-datetime-edit,
+::-webkit-datetime-edit-year-field,
+::-webkit-datetime-edit-month-field,
+::-webkit-datetime-edit-day-field,
+::-webkit-datetime-edit-hour-field,
+::-webkit-datetime-edit-minute-field,
+::-webkit-datetime-edit-second-field,
+::-webkit-datetime-edit-millisecond-field,
+::-webkit-datetime-edit-meridiem-field {
+	padding-block: 0;
+}
+
+/*
+  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;
+}
+
+/*
+  Correct the inability to style the border radius in iOS Safari.
+*/
+
+button,
+input:where([type="button"], [type="reset"], [type="submit"]),
+::file-selector-button {
+	appearance: button;
+}
+
+/*
+  Correct the cursor style of increment and decrement buttons in Safari.
+*/
+
+::-webkit-inner-spin-button,
+::-webkit-outer-spin-button {
+	height: auto;
+}
+
+/*
+  Make elements with the HTML hidden attribute stay hidden by default.
+*/
+
+[hidden]:where(:not([hidden="until-found"])) {
+	display: none !important;
+}