index.css

@font-face {
    font-family: 'ui-font';
    font-weight: normal;
    font-style: normal;
    src: url('merriweather/MerriweatherSans-Light.ttf');
}
@font-face {
    font-family: 'ui-font';
    font-weight: bold;
    font-style: normal;
    src: url('merriweather/MerriweatherSans-Bold.ttf');
}
@font-face {
    font-family: 'ui-font';
    font-weight: normal;
    font-style: italic;
    src: url('merriweather/MerriweatherSans-Italic.ttf');
}
@font-face {
    font-family: 'ui-font';
    font-weight: bold;
    font-style: italic;
    src: url('merriweather/MerriweatherSans-BoldItalic.ttf');
}

@font-face {
    font-family: 'ui-font-serif';
    font-weight: normal;
    font-style: normal;
    src: url('merriweather/Merriweather-Light.ttf');
}
@font-face {
    font-family: 'ui-font-serif';
    font-weight: bold;
    font-style: normal;
    src: url('merriweather/Merriweather-Bold.ttf');
}
@font-face {
    font-family: 'ui-font-serif';
    font-weight: normal;
    font-style: italic;
    src: url('merriweather/Merriweather-Italic.ttf');
}
@font-face {
    font-family: 'ui-font-serif';
    font-weight: bold;
    font-style: italic;
    src: url('merriweather/Merriweather-BoldItalic.ttf');
}


* {
    box-sizing: border-box;
}

html {
    --bright-white: #FFF;
    --paper-white: #F5F5F5;

    --ink-black: #2A2A2A;
    --dark-grey: #4A4A4A;
    --medium-grey: #777;
    --light-grey: #E0E0E0;
    --bright-grey: #ECECEC;

    height: 100%;
    min-height: 100%;
    font-family: 'ui-font', sans-serif;
    font-weight: normal;
    font-size: 14px;
    line-height: 20px;
    background: var(--paper-white);
}
@media (prefers-color-scheme: dark) {
    html {
        --bright-white: #111;
        --paper-white: #1F1F1F;

        --ink-black: #CCC;
        --dark-grey: #DDD;
        --medium-grey: #808080;
        --light-grey: #333;
        --bright-grey: #2A2A2A;
    }
}

body {
    display: flex;
    height: 100%;
    min-height: 100%;
    background: var(--paper-white);
    color: var(--ink-black);
}
h1 {
    margin: 0;
    padding: .25em 0 0 0;
    font-weight: bold;
    font-size: 14px;
}
h2 {
    margin: 0;
    padding: 0;
    font-weight: normal;
    font-size: 14px;
}
p {
    padding: 0;
}
a,
a:link,
a:visited,
a:hover,
a:active {
    text-decoration: none;
    color: inherit;
}
.screenreader-only {
    width: 1px;
    height: 1px;
    position: absolute;
    top: -999px;
    left: -999px;
    overflow:hidden
}
.no-smooth {
    -webkit-font-smoothing: none;
}
.octicon {
    fill: currentColor;
}
.main-wrapper {
    width: 28em;
    height: 100%;
    max-height: 100%;
    float: left;
    position: relative;
    z-index: 2;
    border-right: 1px solid var(--medium-grey);
    overflow: hidden;
}
@media (prefers-color-scheme: dark) {
    .main-wrapper {
        border-right-color: var(--paper-white);
    }
}
.codemirror-wrapper {
    flex: 1;
    position: relative;
}
.info-wrapper {
    position: absolute;
    bottom: 1rem;
    right: 2rem;
    left: 2rem;
    z-index: 1;
    padding: 1em 1.4em;
    font-size: 10px;
    border: 1px solid var(--light-grey);
    border-radius: 3px;
    background: var(--bright-grey);
    color: var(--dark-grey);
}
@media screen and (max-width: 56em) {
    .info-wrapper {
        bottom: 2rem;
    }
}
@media screen and (max-height: 24em)  {
    .info-wrapper {
        display: none;
    }
}
.info-wrapper a:hover {
    color: var(--ink-black);
    text-decoration: underline;
}
.info-wrapper p {
    line-height: 14px;
}
.info-wrapper p:empty {
    display: none;
}
.info-wrapper p.variants::before {
    content: 'Variants: ';
    font-style: italic;
}
.info-wrapper h2::after {
    content: attr(data-license);
    margin-left: 1ex;
    font-size: 8px;
    color: var(--medium-grey);
    text-transform: uppercase;
}
main {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
}
section {
    flex: 0;
    flex-shrink: 0;
}
section#filters,
section.config {
    display: grid;
    grid-column-gap: 4px;
    grid-row-gap: 4px;
    grid-row-gap: 4px;
    grid-template-columns: auto auto auto auto;
    padding: 8px;
    font-size: 10px;
    background: var(--bright-grey);
}

section#filters {
    align-items: stretch;
    grid-template-columns: auto auto auto auto auto;
    border-bottom: 1px solid var(--light-grey);
}
section#filters input,
section#filters select {
    width: 100%;
    margin: 0;
}
section#filters > div {
    display: flex;
}

section.config {
    border-top: 1px solid var(--light-grey);
}
section.config > * {
    text-align: center;
    padding: 0;
    white-space: nowrap;
}
section.select-list {
    flex: 1;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
}
section.select-list:focus {
    outline: none;
}
section.select-list > * {
    overflow: hidden;
}
section.select-list [data-style='serif'] .name {
    font-family: 'ui-font-serif', serif;
}
section.select-list .entry {
    position: relative;
    padding: 8px 12px;
}
section.select-list .entry:hover::before {
    transition: background .2s ease-in-out, left .1s ease-in-out, right .1s ease-in-out;
}
section.select-list .entry:not(:first-child)::before {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    left: 6px;
    right: 6px;
    border-top: 1px solid var(--light-grey);
    pointer-events: none;
    z-index: -1;
}
section.select-list .entry:hover::before,
section.select-list .entry.active::before {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    bottom: 0;
    right: 4px;
    left: 4px;
    border: 1px solid var(--light-grey);
    border-radius: 3px;
    pointer-events: none;
    z-index: -1;
    background: var(--bright-white);
}
section.select-list .entry:hover + .entry:not(:first-child)::before,
section.select-list .entry.active + .entry:not(:first-child)::before {
    border-top: none;
}
section.select-list .entry > a {
    display: block;
    flex: 1;
}
section.select-list .entry.filtered-out {
    display: none;
}
section.select-list a[data-value] {
    display: block;
    width: 66.67%;
    position: relative;
    overflow: hidden;
}
section.select-list a:hover .name,
section.select-list a:active .name {
    text-decoration: underline;
}
section.select-list .entry.active .name {
    font-weight: bold;
}
section.select-list a.website {
    position: absolute;
    top: 6px;
    right: 32px;
    padding: 0 4px;
    font-size: 10px;
    color: var(--paper-white);
    transition: all .2s ease-in-out;
}
section.select-list a.website svg {
    position: relative;
    top: 2px;
}
section.select-list a.website span {
    display: inline-block;
    padding-right: 1ex;
}
section.select-list a.favoritelink {
    position: absolute;
    top: 8px;
    right: 8px;
    color: var(--paper-white);
    cursor: pointer;
}
section.select-list .entry:not(.pinned) a.favoritelink svg {
    fill: transparent;
    stroke: currentColor;
    stroke-width: 1;
}
section.select-list .entry:hover a.website,
section.select-list .entry:hover a.favoritelink {
    color: var(--bright-grey);
}
section.select-list .entry:hover a.favoritelink:hover,
section.select-list a.favoritelink:hover {
    color: var(--ink-black);
}
section.select-list .entry.active a.website,
section.select-list .entry.active a.favoritelink {
    color: var(--dark-grey);
}
section.select-list .entry a.website:hover,
section.select-list .entry.pinned a.favoritelink {
    color: var(--ink-black);
}
section.select-list .pinned {
    background: var(--paper-white);
}
section.select-list .details {
    display: block;
    font-size: 10px;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
    color: var(--ink-black);
}
footer {
    padding: 0 8px 4px 8px;
    font-size: 10px;
    text-align: center;
    line-height: 20px;
    background: var(--bright-grey);
    color: var(--medium-grey);
}
footer h1 + p {
    font-style: italic;
}
footer a:hover,
footer a:active {
    text-decoration: underline;
    color: var(--ink-black);
}
footer p a,
footer p a:link,
footer p a:visited {
    text-decoration: underline;
}

label {
    margin-right: .5ex;
    color: var(--medium-grey);
}
button {
    all: unset;

    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 18px;
    position: relative;
    margin: 0 .5ex 0 0;

    border: 1px solid var(--light-grey);
    border-radius: 3px;
    background: linear-gradient(var(--bright-white), var(--light-grey));
    color: var(--medium-grey);
    cursor: pointer;
}
@media (prefers-color-scheme: dark) {
    button {
        background: linear-gradient(var(--light-grey), var(--bright-white));
    }
}
button:hover {
    color: var(--ink-black);
}
button.selected {
    background: var(--bright-white);
    color: var(--ink-black);
    box-shadow: none;
}
button path,
button rect {
    fill: currentColor;
}
button:not(.selected) > svg:not(:first-child),
button.selected > svg:not(.selected) {
    display: none;
}
select {
    all: unset;
    width: 9em;
    padding: 0 .5ex;
    border: 1px solid var(--light-grey);
    border-radius: 3px;
    background: var(--paper-white);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
}
select option {
    background: var(--light-white);
    color: var(--ink-black);
}
input[type='text'] {
    line-height: 12px;
}
input[type='text'],
input[type='number'] {
    all: unset;
    width: 4em;
    margin-left: .5ex;
    padding: 0 .5ex;
    border: 1px solid var(--light-grey);
    border-radius: 3px;
    background: var(--paper-white);
    text-align: left;
    transition: all .2s ease-in-out;
}
input[type='text']:hover,
input[type='text']:focus,
input[type='number']:hover,
input[type='number']:focus,
select:hover,
select:focus {
    border-color: var(--medium-grey);
    background: var(--paper-white);
}
pre,
textarea,
.CodeMirror {
    height: auto;
    font-family: 'Input Mono', monospace;
}
form {
    height: 100%;
    min-height: 100%;
    position: relative;
    z-index: 1;
}
.nav-button {
    all: unset;
    font-family: inherit;
    cursor: pointer;
}
label + .nav-button {
    margin-left: .5ex;
}
.CodeMirror {
    height: 100%;
    min-height: 100%;
    border: none;
    font-size: 100%;
    background: transparent;
    box-shadow: none !important;
    text-rendering: optimizeLegibility;
}
.CodeMirror .cm-atom {
    font-style: italic;
}
.CodeMirror .cm-comment {
    font-weight: bold;
}
.CodeMirror-gutters {
    background: transparent;
}
.CodeMirror-scroll {
    -webkit-overflow-scrolling: touch;
}

footer .logo,
footer .support {
    display: inline-block;
    position: absolute;
    bottom: 4px;
    left: 8px;
    opacity: .5;
}
footer .logo svg path {
    fill: currentColor;
}
footer .logo * + * {
    margin-left: 8px;
}
footer .support {
    right: 8px;
    left: auto;
}

@media screen and (max-width: 56em) {
    body {
        display: block;
    }
    .main-wrapper,
    form {
        width: 100%;
        height: 50vh;
        min-height: 50vh;
        float: none;
    }
}