Sakura CSS using CSS vars instead of SCSS

sakura.css

/* Sakura.css v1.3.1
 * ================
 * Minimal css theme.
 * Project: https://github.com/oxalorg/sakura/
 */

/* Default Sakura Theme */
:root {
    --color-blossom: #1d7484;
    --color-fade: #982c61;
    --color-bg: #f9f9f9;
    --color-bg-alt: #f1f1f1;
    --color-text: #4a4a4a;
}

/* Sakura Dark Theme */
@media (prefers-color-scheme: dark) {
    :root {
        --color-blossom: #ffffff;
        --color-fade: #c9c9c9;
        --color-bg: #222222;
        --color-bg-alt: #4a4a4a;
        --color-text: #c9c9c9;
    }
}

html {
    font-size: 62.5%;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

body {
    font-size: 1.8rem;
    line-height: 1.618;
    max-width: 38em;
    margin: auto;
    color: var(--color-text);
    background-color: var(--color-bg);
    padding: 13px;
}

@media (max-width: 684px) {
    body {
        font-size: 1.53rem;
    }
}

@media (max-width: 382px) {
    body {
        font-size: 1.35rem;
    }
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.1;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    font-weight: 700;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    overflow-wrap: break-word;
    word-wrap: break-word;
    -ms-word-break: break-all;
    word-break: break-word;
}

h1 {
    font-size: 2.35em;
}

h2 {
    font-size: 2.00em;
}

h3 {
    font-size: 1.75em;
}

h4 {
    font-size: 1.5em;
}

h5 {
    font-size: 1.25em;
}

h6 {
    font-size: 1em;
}

p {
    margin-top: 0px;
    margin-bottom: 2.5rem;
}

small, sub, sup {
    font-size: 75%;
}

hr {
    border-color: var(--color-blossom);
}

a {
    text-decoration: none;
    color: var(--color-blossom);
}

a:hover {
    color: var(--color-fade);
    border-bottom: 2px solid var(--color-text);
}

a:visited {
    color: var(--color-blossom);
}

ul {
    padding-left: 1.4em;
    margin-top: 0px;
    margin-bottom: 2.5rem;
}

li {
    margin-bottom: 0.4em;
}

blockquote {
    margin-left: 0px;
    margin-right: 0px;
    padding-left: 1em;
    padding-top: 0.8em;
    padding-bottom: 0.8em;
    padding-right: 0.8em;
    border-left: 5px solid var(--color-blossom);
    margin-bottom: 2.5rem;
    background-color: var(--color-bg-alt);
}

blockquote p {
    margin-bottom: 0;
}

img, video {
    height: auto;
    max-width: 100%;
    margin-top: 0px;
    margin-bottom: 2.5rem;
}

/* Pre and Code */
pre {
    background-color: var(--color-bg-alt);
    display: block;
    padding: 1em;
    overflow-x: auto;
    margin-top: 0px;
    margin-bottom: 2.5rem;
}

code {
    font-size: 0.9em;
    padding: 0 0.5em;
    background-color: var(--color-bg-alt);
    white-space: pre-wrap;
}

pre > code {
    padding: 0;
    background-color: transparent;
    white-space: pre;
}

/* Tables */
table {
    text-align: justify;
    width: 100%;
    border-collapse: collapse;
}

td, th {
    padding: 0.5em;
    border-bottom: 1px solid var(--color-bg-alt);
}

/* Buttons, forms and input */
input, textarea {
    border: 1px solid var(--color-text);
}

input:focus, textarea:focus {
    border: 1px solid var(--color-blossom);
}

textarea {
    width: 100%;
}

.button, button, input[type="submit"], input[type="reset"], input[type="button"] {
    display: inline-block;
    padding: 5px 10px;
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    background-color: var(--color-blossom);
    color: var(--color-bg);
    border-radius: 1px;
    border: 1px solid var(--color-blossom);
    cursor: pointer;
    box-sizing: border-box;
}

.button[disabled], button[disabled], input[type="submit"][disabled], input[type="reset"][disabled], input[type="button"][disabled] {
    cursor: default;
    opacity: .5;
}

.button:focus:enabled, .button:hover:enabled, button:focus:enabled, button:hover:enabled, input[type="submit"]:focus:enabled, input[type="submit"]:hover:enabled, input[type="reset"]:focus:enabled, input[type="reset"]:hover:enabled, input[type="button"]:focus:enabled, input[type="button"]:hover:enabled {
    background-color: var(--color-fade);
    border-color: var(--color-fade);
    color: var(--color-bg);
    outline: 0;
}

textarea, select, input {
    color: var(--color-text);
    padding: 6px 10px;
    /* The 6px vertically centers text on FF, ignored by Webkit */
    margin-bottom: 10px;
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-bg-alt);
    border-radius: 4px;
    box-shadow: none;
    box-sizing: border-box;
}

textarea:focus, select:focus, input:focus {
    border: 1px solid var(--color-blossom);
    outline: 0;
}

input[type="checkbox"]:focus {
    outline: 1px dotted var(--color-blossom);
}

label, legend, fieldset {
    display: block;
    margin-bottom: .5rem;
    font-weight: 600;
}