/* Set the global variables for everything. Change these to use your own fonts and colours. */
:root {
/* Set sans-serif & mono fonts */
--sans-font: -apple-system, BlinkMacSystemFont, "Avenir Next", Avenir,
"Nimbus Sans L", Roboto, Noto, "Segoe UI", Arial, Helvetica,
"Helvetica Neue", sans-serif;
--mono-font: Consolas, Menlo, Monaco, "Andale Mono", "Ubuntu Mono", monospace;
/* Body font size. By default, effectively 18.4px, based on 16px as 'root em' */
--base-fontsize: 1.15rem;
/* Major third scale progression - see https://type-scale.com/ */
--header-scale: 1.25;
/* Line height is set to the "Golden ratio" for optimal legibility */
--line-height: 1.618;
/* Default (light) theme */
--bg: #fff;
--accent-bg: #f5f7ff;
--text: #212121;
--text-light: #585858;
--border: #d8dae1;
--accent: #0d47a1;
--accent-light: #90caf9;
--code: #d81b60;
--preformatted: #444;
--marked: #ffdd33;
--disabled: #efefef;
}
/* Dark theme */
@media (prefers-color-scheme: dark) {
:root {
--bg: #212121;
--accent-bg: #2b2b2b;
--text: #dcdcdc;
--text-light: #ababab;
--border: #666;
--accent: #ffb300;
--accent-light: #ffecb3;
--code: #f06292;
--preformatted: #ccc;
--disabled: #111;
}
img,
video {
opacity: 0.6;
}
}
html {
/* Set the font globally */
font-family: var(--sans-font);
}
/* Make the body a nice central block */
body {
color: var(--text);
background: var(--bg);
font-size: var(--base-fontsize);
line-height: var(--line-height);
display: flex;
min-height: 100vh;
flex-direction: column;
flex: 1;
margin: 0 auto;
max-width: 45rem;
padding: 0 0.5rem;
overflow-x: hidden;
word-break: break-word;
overflow-wrap: break-word;
}
/* Make the header bg full width, but the content inline with body */
header {
background: var(--accent-bg);
border-bottom: 1px solid var(--border);
text-align: center;
padding: 2rem 0.5rem;
width: 100vw;
position: relative;
box-sizing: border-box;
left: 50%;
right: 50%;
margin-left: -50vw;
margin-right: -50vw;
}
/* Remove margins for header text */
header h1,
header p {
margin: 0;
}
/* Add a little padding to ensure spacing is correct between content and nav */
main {
padding-top: 1.5rem;
}
/* Fix line height when title wraps */
h1,
h2,
h3 {
line-height: 1.1;
}
/* Format navigation */
nav {
font-size: 1rem;
line-height: 2;
padding: 1rem 0;
}
nav a {
margin: 1rem 1rem 0 0;
border: 1px solid var(--border);
border-radius: 5px;
color: var(--text) !important;
display: inline-block;
padding: 0.1rem 1rem;
text-decoration: none;
transition: 0.4s;
}
nav a:hover {
color: var(--accent) !important;
border-color: var(--accent);
}
nav a.current:hover {
text-decoration: none;
}
footer {
margin-top: 4rem;
padding: 2rem 1rem 1.5rem 1rem;
color: var(--text-light);
font-size: 0.9rem;
text-align: center;
border-top: 1px solid var(--border);
}
/* Format headers */
h1 {
font-size: calc(
var(--base-fontsize) * var(--header-scale) * var(--header-scale) *
var(--header-scale) * var(--header-scale)
);
margin-top: calc(var(--line-height) * 1.5rem);
}
h2 {
font-size: calc(
var(--base-fontsize) * var(--header-scale) * var(--header-scale) *
var(--header-scale)
);
margin-top: calc(var(--line-height) * 1.5rem);
}
h3 {
font-size: calc(
var(--base-fontsize) * var(--header-scale) * var(--header-scale)
);
margin-top: calc(var(--line-height) * 1.5rem);
}
h4 {
font-size: calc(var(--base-fontsize) * var(--header-scale));
margin-top: calc(var(--line-height) * 1.5rem);
}
h5 {
font-size: var(--base-fontsize);
margin-top: calc(var(--line-height) * 1.5rem);
}
h6 {
font-size: calc(var(--base-fontsize) / var(--header-scale));
margin-top: calc(var(--line-height) * 1.5rem);
}
/* Format links & buttons */
a,
a:visited {
color: var(--accent);
}
a:hover {
text-decoration: none;
}
a button,
button,
[role="button"],
input[type="submit"],
input[type="reset"],
input[type="button"] {
border: none;
border-radius: 5px;
background: var(--accent);
font-size: 1rem;
color: var(--bg);
padding: 0.7rem 0.9rem;
margin: 0.5rem 0;
transition: 0.4s;
}
a button[disabled],
button[disabled],
[role="button"][aria-disabled="true"],
input[type="submit"][disabled],
input[type="reset"][disabled],
input[type="button"][disabled],
input[type="checkbox"][disabled],
input[type="radio"][disabled],
select[disabled] {
cursor: default;
opacity: 0.5;
cursor: not-allowed;
}
input:disabled,
textarea:disabled,
select:disabled {
cursor: not-allowed;
background-color: var(--disabled);
}
input[type="range"] {
padding: 0;
}
/* Set the cursor to '?' while hovering over an abbreviation */
abbr {
cursor: help;
}
button:focus,
button:enabled:hover,
[role="button"]:focus,
[role="button"]:not([aria-disabled="true"]):hover,
input[type="submit"]:focus,
input[type="submit"]:enabled:hover,
input[type="reset"]:focus,
input[type="reset"]:enabled:hover,
input[type="button"]:focus,
input[type="button"]:enabled:hover,
input[type="checkbox"]:focus,
input[type="checkbox"]:enabled:hover,
input[type="radio"]:focus,
input[type="radio"]:enabled:hover {
filter: brightness(1.4);
cursor: pointer;
}
/* Format the expanding box */
details {
background: var(--accent-bg);
border: 1px solid var(--border);
border-radius: 5px;
margin-bottom: 1rem;
}
summary {
cursor: pointer;
font-weight: bold;
padding: 0.6rem 1rem;
}
details[open] {
padding: 0.6rem 1rem 0.75rem 1rem;
}
details[open] summary {
margin-bottom: 0.5rem;
padding: 0;
}
details[open] > *:last-child {
margin-bottom: 0;
}
/* Format tables */
table {
border-collapse: collapse;
width: 100%;
margin: 1.5rem 0;
}
td,
th {
border: 1px solid var(--border);
text-align: left;
padding: 0.5rem;
}
th {
background: var(--accent-bg);
font-weight: bold;
}
tr:nth-child(even) {
/* Set every other cell slightly darker. Improves readability. */
background: var(--accent-bg);
}
table caption {
font-weight: bold;
margin-bottom: 0.5rem;
}
/* Lists */
ol,
ul {
padding-left: 3rem;
}
/* Format forms */
textarea,
select,
input {
font-size: inherit;
font-family: inherit;
padding: 0.5rem;
margin-bottom: 0.5rem;
color: var(--text);
background: var(--bg);
border: 1px solid var(--border);
border-radius: 5px;
box-shadow: none;
box-sizing: border-box;
width: 60%;
-moz-appearance: none;
-webkit-appearance: none;
appearance: none;
}
/* Add arrow to */
select {
background-image: linear-gradient(45deg, transparent 49%, var(--text) 51%),
linear-gradient(135deg, var(--text) 51%, transparent 49%);
background-position: calc(100% - 20px), calc(100% - 15px);
background-size: 5px 5px, 5px 5px;
background-repeat: no-repeat;
}
select[multiple] {
background-image: none !important;
}
/* checkbox and radio button style */
input[type="checkbox"],
input[type="radio"] {
vertical-align: bottom;
position: relative;
}
input[type="radio"] {
border-radius: 100%;
}
input[type="checkbox"]:checked,
input[type="radio"]:checked {
background: var(--accent);
}
input[type="checkbox"]:checked::after {
/* Creates a rectangle with colored right and bottom borders which is rotated to look like a check mark */
content: " ";
width: 0.1em;
height: 0.25em;
border-radius: 0;
position: absolute;
top: 0.05em;
left: 0.18em;
background: transparent;
border-right: solid var(--bg) 0.08em;
border-bottom: solid var(--bg) 0.08em;
font-size: 1.8em;
transform: rotate(45deg);
}
input[type="radio"]:checked::after {
/* creates a colored circle for the checked radio button */
content: " ";
width: 0.25em;
height: 0.25em;
border-radius: 100%;
position: absolute;
top: 0.125em;
background: var(--bg);
left: 0.125em;
font-size: 32px;
}
/* Make the textarea wider than other inputs */
textarea {
width: 80%;
}
/* Makes input fields wider on smaller screens */
@media only screen and (max-width: 720px) {
textarea,
select,
input {
width: 100%;
}
}
/* Ensures the checkbox and radio inputs do not have a set width like other input fields */
input[type="checkbox"],
input[type="radio"] {
width: auto;
}
/* do not show border around file selector button */
input[type="file"] {
border: 0;
}
/* Without this any HTML using <fieldset> shows ugly borders and has additional padding/margin. (Issue #3) */
fieldset {
border: 0;
padding: 0;
margin: 0;
}
/* Misc body elements */
hr {
color: var(--border);
border-top: 1px;
margin: 1rem auto;
}
mark {
padding: 2px 5px;
border-radius: 4px;
background: var(--marked);
}
main img,
main video {
max-width: 100%;
height: auto;
border-radius: 5px;
}
figure {
margin: 0;
}
figcaption {
font-size: 0.9rem;
color: var(--text-light);
text-align: center;
margin-bottom: 1rem;
}
blockquote {
margin: 2rem 0 2rem 2rem;
padding: 0.4rem 0.8rem;
border-left: 0.35rem solid var(--accent);
opacity: 0.8;
font-style: italic;
}
cite {
font-size: 0.9rem;
color: var(--text-light);
font-style: normal;
}
/* Use mono font for code like elements */
code,
pre,
pre span,
kbd,
samp {
font-size: 1.075rem;
font-family: var(--mono-font);
color: var(--code);
}
kbd {
color: var(--preformatted);
border: 1px solid var(--preformatted);
border-bottom: 3px solid var(--preformatted);
border-radius: 5px;
padding: 0.1rem;
}
pre {
padding: 1rem 1.4rem;
max-width: 100%;
overflow: auto;
overflow-x: auto;
color: var(--preformatted);
background: var(--accent-bg);
border: 1px solid var(--border);
border-radius: 5px;
}
/* Fix embedded code within pre */
pre code {
color: var(--preformatted);
background: none;
margin: 0;
padding: 0;
}