normalize.css

/**
 * 1. Correct the line height in all browsers.
 * 2. Prevent adjustments of font size after orientation changes in iOS.
 */

html {
  line-height: 1.5; /* 1 */
  -webkit-text-size-adjust: 100%; /* 2 */
  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";
}

/**
 * 1. Remove the margin in all browsers.
 * 2. Inherit line-height from the HTML element.
 */

body {
  margin: 0; /* 1 */
  line-height: inherit; /* 2 */
}

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

hr {
  box-sizing: content-box; /* 1 */
  height: 0; /* 1 */
  overflow: visible; /* 2 */
  border-width: 0;
  border-color: transparent;
  border-top-width: 1px;
  border-top-style: solid;
  border-top-color: inherit;
}


/**
 * 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 */
}

/**
 * Add the correct font weight in Chrome, Edge, and Safari.
 */

b,
strong {
  font-weight: bolder;
}

/**
 * 1. Correct the inheritance and scaling of font size in all browsers.
 * 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. Change the font styles in all browsers.
 * 2. Remove the margin in Firefox and Safari.
 */

button,
input,
optgroup,
select,
textarea {
  color: inherit; /* 1 */
  font-family: inherit; /* 1 */
  font-size: 100%; /* 1 */
  line-height: inherit; /* 1 */
  margin: 0; /* 2 */
}

/**
 * Remove the inheritance of text transform in Edge, Firefox, and IE.
 */

button,
select {
  text-transform: none;
}

/**
 * Correct the inability to style clickable types in iOS and Safari.
 */

button,
[type="button"],
[type="reset"],
[type="submit"] {
  -webkit-appearance: button;
}

/**
 * Add the correct vertical alignment in Chrome, Firefox, and Opera.
 */

progress {
  vertical-align: baseline;
}

/**
 * Remove the default vertical scrollbar in IE 10+.
 */

textarea {
  overflow: auto;
}

/**
 * Correct the cursor style of increment and decrement buttons in Chrome.
 */

[type="number"]::-webkit-inner-spin-button,
[type="number"]::-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.
 */

[type="search"]::-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 all browsers.
 */

summary {
  display: list-item;
}


/** HARD RESET **/


/**
 * Remove all the styles of the "User-Agent-Stylesheet", except for the 'display' property
 * - The "symbol *" part is to solve Firefox SVG sprite bug
 */
*:where(:not(iframe, canvas, img, svg, video):not(svg *, symbol *)) {
  all: unset;
  display: revert;
}

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

/**
 * Reapply the pointer cursor for anchor tags
 */
a, button {
  cursor: revert;
}

/**
 * Remove list styles (bullets/numbers)
 */
ol, ul, menu {
  list-style: none;
}

/**
 * For images to not be able to exceed their container
 */
img {
  max-width: 100%;
}

/**
 * Removes spacing between cells in tables
 */
table {
  border-collapse: collapse;
}

/**
 * Revert the 'white-space' property for textarea elements on Safari
 */
textarea {
  white-space: revert;
}

/**
 * Minimum style to allow to style meter element
 */
meter {
  -webkit-appearance: revert;
  appearance: revert;
}

/**
 * Reset default text opacity of input placeholder
 */
::placeholder {
  color: unset;
}

/* fix the feature of 'hidden' attribute.
   display:revert; revert to element instead of attribute */
:where([hidden]) {
  display: none;
}

/* revert for bug in Chromium browsers
   - fix for the content editable attribute will work properly. */
:where([contenteditable]) {
  -moz-user-modify: read-write;
  -webkit-user-modify: read-write;
  overflow-wrap: break-word;
  -webkit-line-break: after-white-space;
}

/* apply back the draggable feature - exist only in Chromium and Safari */
:where([draggable="true"]) {
  -webkit-user-drag: element;
}