CSS reset / starter

css-starter-kit.css

*:focus:not(:focus-visible),
*::before:focus:not(:focus-visible),
*::after:focus:not(:focus-visible) {
  outline: none;
}

/* https://medium.com/@matuzo/writing-css-with-accessibility-in-mind-8514a0007939 */
.visually-hidden {
  position: absolute;
  white-space: nowrap;
  width: 1px;
  height: 1px;
  overflow: hidden;
  border: 0;
  padding: 0;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  margin: -1px;
}

/* https://www.scottohara.me/blog/2019/01/12/lists-and-safari.html */
.plain-list {
  list-style: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg'/%3E");
  padding-left: 0;
}

/* prettier-ignore */
@media(prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}

:root {
	--link-colour: #0000FF;
	--selection-colour: #000000;
	--selection-bg-colour: #b3d4fc;
	--focus-border: #cccccc;
}

html,
body,
div,
span,
applet,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
a,
abbr,
acronym,
address,
big,
cite,
code,
del,
dfn,
em,
img,
ins,
kbd,
q,
s,
samp,
small,
strike,
strong,
sub,
sup,
tt,
var,
b,
u,
i,
center,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td,
article,
aside,
canvas,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section,
summary,
time,
mark,
audio,
video,
context,
toolbar,
picture,
source {
	margin: 0;
	padding: 0;
	border: 0;
	vertical-align: baseline;
	font-size: 100%;
	background: transparent;
}
/* ==========================================================================
   HTML5 display definitions
   ========================================================================== */

/**
 * Correct `block` display not defined for any HTML5 element in IE 8/9.
 * Correct `block` display not defined for `details` or `summary` in IE 10/11
 * and Firefox.
 * Correct `block` display not defined for `main` in IE 11.
 */

article,
aside,
details,
figcaption,
figure,
footer,
header,
main,
menu,
nav,
section,
summary {
	display: block;
}
/**
 * 1. Correct `inline-block` display not defined in IE 8/9.
 * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
 */

audio,
canvas,
progress,
video {
	/* 1 */
	display: inline-block;
	/* 2 */
	vertical-align: baseline;
}
/**
 * Prevent modern browsers from displaying `audio` without controls.
 * Remove excess height in iOS 5 devices.
 */

audio:not([controls]) {
	display: none;
	height: 0;
}
/**
 * Address `[hidden]` styling not present in IE 8/9.
 * Hide the `template` element in IE, Safari, and Firefox < 22.
 */

[hidden],
template {
	display: 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 {
	/* 1 */
	-webkit-appearance: button;
	/* 2 */
	font: inherit;
}
/* ==========================================================================
   Base
   ========================================================================== */

/**
 * 1. Set default font family to sans-serif.
 * 2. Prevent iOS text size adjust after orientation change, without disabling
 *    user zoom.
 * 3. Correct the line height in all browsers.
 */

html {
	font-family: sans-serif;
	text-size-adjust: 100%;
	line-height: 1.15;
}
/**
 * Remove default margin.
 */

body {
	margin: 0;
}
/* ==========================================================================
   Links
   ========================================================================== */

/**
 * 1. Remove the gray background on active links in IE 10.
 * 2. Remove the gaps in underlines in iOS 8+ and Safari 8+.
 */

a {
	background-color: transparent;
	/* 1 */
	-webkit-text-decoration-skip: objects;
	/* 2 */
}
/**
 * Address `outline` inconsistency between Chrome and other browsers.
 */

a:focus {
	outline: thin dotted var(--focus-border);
}

textarea:focus,
input:focus {
	outline: thin dotted var(--focus-border);
}

:focus {
	outline: thin dotted var(--focus-border);
}
/**
 * 1. Remove the bottom border in Chrome 57-
 * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
 */

abbr[title] {
	border-bottom: none;
	/* 1 */
	text-decoration: underline;
	/* 2 */
	text-decoration: underline dotted;
	/* 2 */
}
/**
 * Address style set to `bolder` in Firefox 4+, Safari 5, and Chrome.
 */

b,
strong {
	font-weight: bolder;
}
/**
 * Address styling not present in Safari 5 and Chrome.
 */

dfn {
	font-style: italic;
}
/**
 * Address differences between Firefox and other browsers.
 */

/**
 * 1. Add the correct box sizing in Firefox.
 * 2. Show the overflow in Edge and IE.
 */

hr {
	/* 1 */
	box-sizing: content-box;
	/* 1 */
	height: 0;
	/* 2 */
	overflow: visible;
}
/**
 * Address styling not present in IE 8/9.
 */

mark {
	background: #ff0;
	color: #000;
}
/**
 * Correct font family set oddly in Safari 5 and Chrome.
 */

code,
kbd,
pre,
samp {
	font-family: monospace, monospace;
	font-size: 1em;
}
/**
 * Improve readability of pre-formatted text in all browsers.
 */

pre {
	white-space: pre-wrap;
}
/**
 * Set consistent quote types.
 */

q {
	quotes: "\201C""\201D""\2018""\2019";
}
/**
 * Address inconsistent and variable font size in all browsers.
 */

small {
	font-size: 80%;
}
/**
 * Prevent `sub` and `sup` affecting `line-height` in all browsers.
 */

sub,
sup {
	font-size: 75%;
	line-height: 0;
	position: relative;
	vertical-align: baseline;
}

sup {
	top: -0.5em;
}

sub {
	bottom: -0.25em;
}
/* ==========================================================================
   Embedded content
   ========================================================================== */

/**
 * Remove border when inside `a` element in IE 8/9.
 */

img {
	border: 0;
}
/**
 * Change the fill color to match the text color in all browsers (opinionated).
 */

svg {
	fill: currentColor;
}
/**
 * Correct overflow displayed oddly in IE 9.
 */

svg:not(:root) {
	overflow: hidden;
}
/* ==========================================================================
   Figures
   ========================================================================== */

/**
 * Address margin not present in IE 8/9 and Safari 5.
 */

figure {
	margin: 0;
}
/* ==========================================================================
   Forms
   ========================================================================== */

/**
 * Define consistent border, margin, and padding.
 */

fieldset {
	border: none;
	margin: 0;
	padding: 0;
}
/**
 * 1. Correct the text wrapping in Edge and IE.
 * 2. Correct the color inheritance from `fieldset` elements in IE.
 * 3. Remove the padding so developers are not caught out when they zero out
 *    `fieldset` elements in all browsers.
 */

legend {
	/* 1 */
	box-sizing: border-box;
	/* 2 */
	color: inherit;
	/* 1 */
	display: table;
	/* 1 */
	max-width: 100%;
	/* 3 */
	padding: 0;
	/* 1 */
	white-space: normal;
}
/**
 * 1. Change the font styles in all browsers.
 * 2. Remove the margin in Firefox and Safari.
 */

button,
input,
optgroup,
select,
textarea {
	font-family: inherit;
	/* 1 */
	font-size: 100%;
	/* 1 */
	line-height: 1.15;
	/* 1 */
	margin: 0;
	/* 2 */
}
/**
 * Address inconsistent `text-transform` inheritance for `button` and `select`.
 * All other form control elements do not inherit `text-transform` values.
 * Correct `button` style inheritance in Chrome, Safari 5+, and IE 8+.
 * Correct `select` style inheritance in Firefox 4+ and Opera.
 */

button,
select {
	text-transform: none;
}
/**
 * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
 *    and `video` controls.
 * 2. Correct inability to style clickable `input` types in iOS.
 * 3. Improve usability and consistency of cursor style between image-type
 *    `input` and others.
 */

button,
html input[type="button"],
input[type="reset"],
input[type="submit"] {
	/* 2 */
	-webkit-appearance: button;
	/* 3 */
	cursor: pointer;
}
/**
 * Re-set default cursor for disabled elements.
 */

button[disabled],
html input[disabled] {
	cursor: default;
}
/**
 * 1. Correct the odd appearance in Chrome and Safari.
 * 2. Correct the outline style in Safari.
 */

[type="search"] {
	appearance: textfield;
	/* 1 */
	outline-offset: -2px;
	/* 2 */
}
/**
 * Remove inner padding and search cancel button in Safari 5 and Chrome
 * on OS X.
 */

input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-decoration {
	-webkit-appearance: none;
}
/**
 * Remove the inner border and padding in Firefox.
 */

button::-moz-focus-inner,
[type="button"]::-moz-focus-inner,
[type="reset"]::-moz-focus-inner,
[type="submit"]::-moz-focus-inner {
	border-style: none;
	padding: 0;
}
/**
 * Restore the focus styles unset by the previous rule.
 */

button:-moz-focusring,
[type="button"]:-moz-focusring,
[type="reset"]:-moz-focusring,
[type="submit"]:-moz-focusring {
	outline: 1px dotted ButtonText;
}
/**
 * Address Firefox 4+ setting `line-height` on `input` using `!important` in
 * the UA stylesheet.
 */

input {
	line-height: normal;
}
/**
 * 1. Remove default vertical scrollbar in IE 8/9.
 * 2. Improve readability and alignment in all browsers.
 */

textarea {
	/* 1 */
	overflow: auto;
	/* 2 */
	vertical-align: top;
}
/* ==========================================================================
   Tables
   ========================================================================== */

/**
 * Remove most spacing between table cells.
 */

table {
	border-collapse: collapse;
	border-spacing: 0;
}
td,
th {
	padding: 0;
}
/* Interactive
   ========================================================================== */

/*
 * Add the correct display in IE 9-.
 * 1. Add the correct display in Edge, IE, and Firefox.
 */

details,
menu {
	display: block;
}
/*
 * Add the correct display in all browsers.
 */

summary {
	display: list-item;
}
/* Scripting
   ========================================================================== */

/**
 * Add the correct display in IE 9-.
 */

canvas {
	display: inline-block;
}
/**
 * Add the correct display in IE.
 */

template {
	display: none;
}
/* Hidden
   ========================================================================== */

/**
 * Add the correct display in IE 10-.
 */

[hidden] {
	display: none;
}
/* WAI-ARIA (https://www.w3.org/TR/html5/dom.html#wai-aria)
   ========================================================================== */

/**
 * Change the cursor on busy elements (opinionated).
 */

[aria-busy="true"] {
	cursor: progress;
}
/*
 * Change the cursor on control elements (opinionated).
 */

[aria-controls] {
	cursor: pointer;
}
/*
 * Change the cursor on disabled, not-editable, or otherwise
 * inoperable elements (opinionated).
 */

[aria-disabled] {
	cursor: default;
}
/* User interaction (https://www.w3.org/TR/html5/editing.html)
   ========================================================================== */

/*
 * Remove the tapping delay on clickable elements (opinionated).
 * 1. Remove the tapping delay
 */

a,
area,
button,
input,
label,
select,
textarea,
[tabindex] {
	/* 1 */
	touch-action: manipulation;
}
/*
 * Change the display on visually hidden accessible elements (opinionated).
 */

[hidden][aria-hidden="false"] {
	clip: rect(0, 0, 0, 0);
	display: inherit;
	position: absolute;
}
[hidden][aria-hidden="false"]:focus {
	clip: auto;
}
/* disable / enable fort kerning and in all modern browers from ie9 upwards */

body {
	/* only optimize text for headers due to performance issues */
	text-rendering: optimizeSpeed;
	-moz-osx-font-smoothing: subpixel-antialiased;
	-webkit-font-smoothing: subpixel-antialiased;
	font-kerning: auto;
}

h1,
h2,
h3,
h4,
h5,
h6,
th,
td,
caption {
	font-weight: normal;
	/* just left it in the headers. Was making font less legible elsewhere */
	text-rendering: optimizeLegibility;
	font-kerning: normal;
	font-feature-settings: "liga", "kern";
}

/* slight character and word gap of retina devices to make the text more legible */
@media (min-device-pixel-ratio: 2),
not all,
(min-resolution: 2dppx),
(min-resolution: 192dpi) {
	p,
	li {
		letter-spacing: 0.01rem;
		word-spacing: 0.01rem;
	}
}
/* { Box-sizing: Border-box } FTW: http://www.paulirish.com/2012/box-sizing-border-box-ftw/ */

*:not(hr),
*:not(hr)::before,
*:not(hr)::after {
	box-sizing: border-box;
}

input[type=submit],
input[type=button],
select,
a {
	cursor: pointer;
}

textarea {
	resize: vertical;
	overflow: auto;
	width: 100%;
}
/**
 * Fix the cursor style for Chrome's increment/decrement buttons. For certain
 * `font-size` values of the `input`, it causes the cursor style of the
 * decrement button to change from `default` to `text`.
 */

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
	height: auto;
}
/* Remove Search Box Buttons in WebKit: http://davidwalsh.name/remove-search-box-buttons-webkit */

input[type='search']::-webkit-search-decoration,
input[type='search']::-webkit-search-cancel-button,
input[type='search']::-webkit-search-results-button,
input[type='search']::-webkit-search-results-decoration {
	display: none;
}
/* remove default webkit form field appearance */

input[type=text],
input[type=email],
input[type=url],
textarea {
	appearance: none;
	border-radius: 0;
}
/* responsive images */

img {
	max-width: 100%;
	height: auto;
	vertical-align: middle;
	border: 0;
}
/*
 * Remove the text shadow on text selections (opinionated).
 * 1. Restore the coloring undone by defining the text shadow (opinionated).
 */

::-moz-selection {
	/* 1 */
	background-color: var(--selection-bg-colour);
	/* 1 */
	color: var(--selection-colour);
	text-shadow: none;
}

::selection {
	/* 1 */
	background-color: var(--selection-bg-colour);
	/* 1 */
	color: var(--selection-colour);
	text-shadow: none;
}
/* set colour links */

a:link {
	color: var(--link-colour);
}
a:visited {
	color: var(--link-colour);
}
a:focus {
	color: var(--link-colour);
}
a:hover {
	color: var(--link-colour);
}
a:active {
	color: var(--link-colour);
}
/* selected link */

.hide {
	display: none;
}

/* clearfix */

.clearfix::before,
.clearfix::after {
	content: "\0020";
	display: block;
	height: 0;
	overflow: hidden;
}
.clearfix::after {
	clear: both;
}

.display-flow-root {
	display: flow-root;
}

.flex-center: {
	display: flex;
	align-items: center;
	justify-content: center;
}

/* new aspect ration techniques here using Grid and SVG: 
 https://justmarkup.com/log/2018/03/collection-of-css-snippets
 https://codeburst.io/keeping-aspect-ratio-with-html-and-no-padding-tricks-40705656808b */
.old-aspect-ratio.video-wrapper {
	position: relative;
	padding-bottom: 56.25%;
	/* 16:9 */
	padding-top: 25px;
	height: 0;
}

.old-aspect-ratio.video-wrapper iframe {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}

.ellipsis {
	max-width: 200px;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.truncated {
	display: block;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
	max-width: 15rem;
}