index.css

/**
  Block model normalization
 */
*,
::before,
::after {
  box-sizing: border-box;
}

/**
  Remove internal indentation on the left of list tags,
  which have the class attribute
  */
:where(ul, ol):where([class]) {
  padding-left: 0;
}

/**
  Remove external indentation of body and two other tags,
  which have the class attribute.
  */
body,
:where(blockquote, figure):where([class]) {
  margin: 0;
}

/**
  Remove external vertical indentation for the required tags,
  which have the class attribute.
  */
:where(h1,
  h2,
  h3,
  h4,
  h5,
  h6,
  p,
  ul,
  ol,
  dl):where([class]) {
  margin-block: 0;
}

:where(dd[class]) {
  margin-left: 0;
}

:where(fieldset[class]) {
  margin-left: 0;
  padding: 0;
  border: none;
}

/**
  Remove the standard marker for a bulleted list,
  which has the class attribute
  */
:where(ul[class]) {
  list-style: none;
}

:where(address[class]) {
  font-style: normal;
}

/**
  Zero out vertical outer indents of a paragraph,
  declare a local variable for the outer indent down,
  to avoid interacting with the more complex selector
  */
p {
  --paragraphMarginBottom: 24px;

  margin-block: 0;
}

/**
  External indent down for a paragraph without class attribute,
  which is not last among its neighboring elements
  */
p:where(:not([class]):not(:last-child)) {
  margin-bottom: var(--paragraphMarginBottom);
}


/**
  Simplify your work with images and videos
  */
img,
video {
  display: block;
  max-width: 100%;
  height: auto;
}

/**
  Inherit font properties for input fields
  */
input,
textarea,
select,
button {
  font: inherit;
}

html {
  /**
    Useful in most situations
    (when, for example, you need to "pin" the footer to the bottom of the site)
    */
  height: 100%;
  /**
    Remove interface horizontal jump
    when scrollbar appears / disappears
    */
  scrollbar-gutter: stable;
}

/**
  Smooth Scrolling
 */
html,
:has(:target) {
  scroll-behavior: smooth;
}

body {
  /**
    Useful in most situations
    (when, for example, you need to "pin" the footer to the bottom of the site)
    */
  min-height: 100%;
  /**
    Uniform spacing
    */
  line-height: 1.5;
}

/**
  Normalize the height of a link element when inspecting it in DevTools
  */
a:where([class]) {
  display: inline-flex;
}

/**
  Cursor-hand when hovering over an item
  */
button,
label {
  cursor: pointer;
}

/**
  Colorize the svg elements of
  (except those that already have the
  attribute fill with a value of 'none' or start with 'url')
  */
:where([fill]:not([fill="none"],
    [fill^="url"])) {
  fill: currentColor;
}

/**
  Colorize the svg elements of
  (except for those that already have the
  stroke attribute set to 'none')
  */
:where([stroke]:not([stroke="none"],
    [stroke^="url"])) {
  stroke: currentColor;
}

/**
  Fix color change delay bug when interacting with svg elements
  */
svg * {
  transition-property: fill, stroke;
}

/**
  Bringing table frames into classic 'collapse' view
  */
:where(table) {
  border-collapse: collapse;
  border-color: currentColor;
}

/**
  Remove all animations and transitions for people
  who prefer not to use them.
  */
@media (prefers-reduced-motion: reduce) {

  *,
  ::before,
  ::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}