style.css

/* App layout */

body {
    display: flex;
    flex-flow: column;
    height: 100vh;
    color: #fff;
    font: normal 14px Roboto, sans-serif;
    background-color: #282a36;
}

#editor {
    flex-grow: 1;
    margin-top: -3px;
    overflow: auto;
}

#controls,
#copy,
#description,
footer {
    background-color: #3b3b47;
    z-index: 10;
}

#progress {
    min-height: 3px;
    background: #ff79c6;
    z-index: 15;
    width: 0;
}

.hidden,
select,
#copy:not(.hidden) + #controls,
.readonly .hide-readonly {
    display: none;
}

#copy-link {
    font-family: JetBrainsMono, sans-serif;
    width: 100%;
}

/* Styling */
.shadow-bottom {
    box-shadow: rgba(0, 0, 0, 0.15) 0 3px 10px;
}
.shadow-top {
    box-shadow: rgba(0, 0, 0, 0.15) 0 -3px 10px;
}
a,
a:hover,
a:active {
    color: #fff;
}
.CodeMirror {
    height: 100%;
    font-family: JetBrainsMono, sans-serif;
}
.title {
    font: normal 24px JetBrainsMono, sans-serif;
    white-space: nowrap;
}
.mono {
    font-family: JetBrainsMono, sans-serif;
}
.description-trigger:hover + #description {
    display: block;
    position: fixed;
    bottom: 20px;
    margin: 40px;
    right: 0;
    max-width: 350px;
}
.description-trigger:hover + #description + .overlay {
    /* Used to un-hover on mobile */
    display: block;
    position: fixed;
    background: transparent;
    right: 0;
    top: 0;
    left: 0;
    bottom: 25px;
}

#description b {
    font-weight: normal;
    color: #ff79c6;
}

/* Form elements */

#controls .ss-main {
    width: 180px;
}

.ss-main .ss-single-selected,
button,
input[type='text'],
input[type='search'] {
    background-color: #3b3b47 !important;
    color: #fff !important;
    border-radius: 2px !important;
    border: 1px solid #ccc !important;
    font: normal 14px Roboto, sans-serif;
    height: 26px !important;
}

input::-webkit-search-cancel-button {
    display: none;
}
input::-moz-selection {
    background-color: rgba(90, 95, 128, 0.99);
}
input::selection {
    background-color: rgba(90, 95, 128, 0.99);
}
button {
    cursor: pointer;
}
button:hover {
    background-color: rgba(255, 255, 255, 0.1) !important;
}
.ss-content {
    background-color: #282936;
    color: #dedede;
    font-size: 14px;
}
.ss-content .ss-disabled {
    background-color: #3b3b47 !important;
}

/* Fonts */
@font-face {
    font-family: 'JetBrainsMono';
    src: url('https://cdn.jsdelivr.net/gh/JetBrains/JetBrainsMono/web/woff2/JetBrainsMono-Regular.woff2')
            format('woff2'),
        url('https://cdn.jsdelivr.net/gh/JetBrains/JetBrainsMono/web/woff/JetBrainsMono-Regular.woff') format('woff'),
        url('https://cdn.jsdelivr.net/gh/JetBrains/JetBrainsMono/ttf/JetBrainsMono-Regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
}

@font-face {
    font-family: 'Roboto';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: local('Roboto'), local('Roboto-Regular'),
        url(https://fonts.gstatic.com/s/roboto/v20/KFOmCnqEu92Fr1Mu4mxK.woff2) format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC,
        U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}