crucial.css/crucial.css

Crucial CSS sets up your CSS with the what you need to start styling and nothing more.

/*! Crucial.CSS v1.0.8 | MIT License | https://github.com/saltnpixels/curcial.css */

/* Document
   ========================================================================== */

/**
 * 1. Set the font size to base of 10. 1.6rem = 16px. No more math needed. 
 * 2. Set Box sizing default to border-box
 * 3. Set line height to 1.5 which works nicely with most font sizes 
 * 4. Prevent adjustments of font size after orientation changes in iOS.
*/

html {
  font-size: 62.5%; /* 1 */
  box-sizing: border-box; /* 2 */
  line-height: 1.5; /* 3 */
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  overflow-x: clip;
}

*,
::before,
::after {
  box-sizing: inherit; /* everything inherits border-box unless specified */
}

/* Sections
   ========================================================================== */

/* can be given to body or a direct inner div. Thisd should have a footer if you want a sticky footer */

.site {
 min-height: 100dvh;
}

/* .sticky footer */
body > footer,
.site > footer {
  position: sticky;
  top: 100vh;
}

/**
 * 1. Remove the body margin in all browsers. 
 * 2. Add fonts 
 * 3. Add font size
 */

body {
  margin: 0; /* 1 */
  font-family: var(--font-primary); /* 2 */
  font-size: var(--fs-default); /* 3 */
  min-height: 100dvh;
}

nav ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

/*
Grouping content
================
*/

/**
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)
*/

hr {
  height: 0; /* 1 */
  color: inherit; /* 2 */
}

/*
Text-level semantics
====================
*/

/**
Add the correct text decoration in Chrome, Edge, and Safari.
*/

abbr[title] {
  text-decoration: underline dotted;
}

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

b,
strong {
  font-weight: bolder;
}

/**
1. Improve consistency of default fonts in all browsers. (https://github.com/sindresorhus/modern-normalize/issues/3)
2. Correct the odd 'em' font sizing in all browsers.
*/

code,
kbd,
samp,
pre {
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo,
    monospace; /* 1 */
}

blockquote,
dl,
dd,
h1,
h2,
h3,
h4,
h5,
h6,
figure,
p,
pre {
  margin: 0;
}

/* fix h1 inside a section */
h1 {
  font-size: 3rem;
}

/* spacing between paragraphs */
p + p {
  margin-top: 1.5em;
}

/**
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;
}

/*
Tabular data
============
*/

/**
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)
*/

table {
  text-indent: 0; /* 1 */
  border-color: inherit; /* 2 */
}

/*
Forms
=====
*/

/**
1. Change the font styles in all browsers.
2. Inherit the line-height
3. Inherit the font size
4. Remove the margin in Firefox and Safari.
*/

button,
input,
optgroup,
select,
textarea {
  font-family: inherit; /* 1 */
  line-height: inherit; /* 2 */
  font-size: inherit; /* 3 */
  margin: 0; /* 4 */
}

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

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;
}

/**
Remove the inner border and padding in Firefox.
*/

::-moz-focus-inner {
  border-style: none;
  padding: 0;
}

/**
Restore the focus styles unset by the previous rule.
*/

:-moz-focusring {
  outline: 1px dotted ButtonText;
}

/**
Remove the additional ':invalid' styles in Firefox.
See: https://github.com/mozilla/gecko-dev/blob/2f9eacd9d3d995c937b4251a5557d95d494c9be1/layout/style/res/forms.css#L728-L737
*/

:-moz-ui-invalid {
  box-shadow: none;
}

/**
Remove the padding so developers are not caught out when they zero out 'fieldset' elements in all browsers.
*/

legend {
  padding: 0;
}

/**
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 */
}

/*
Interactive
===========
*/

/*
Add the correct display in Chrome and Safari.
*/

summary {
  display: list-item;
}

/*
Media
===========
*/

img,
svg,
video,
canvas,
audio,
iframe,
embed,
object {
  display: block;
  vertical-align: middle;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

/*
Variables
===========
*/

:root {
  /* font variable */
  --font-primary: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif, "Apple Color Emoji", "Segoe UI Emoji";

  /* Default Font Size */
  --fs-default: 1.6rem;
}