haven.css

body, html {
    margin: 0;
    padding: 0;
}

body {
    overflow-y: scroll;
}

body, input, label, #loader {
    color: #000;
    background-color: #fff;
}

input[type=text] {
    height: auto;
    font-size: inherit;
}

a {
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

html.theme-dark body,
html.theme-dark input,
html.theme-dark label,
html.theme-dark #loader {
    color: #aaa;
    background-color: #000;
}

html.monospace body,
html.monospace input,
html.monospace label,
html.monospace #loader {
    font-family: monospace;
}

body, input, label {
    font-size: 17px;
}

#output {
    margin: 0 auto;
    max-width: 751px;
    overflow-wrap: break-word;
    padding: 0 15px 10px 15px;
}

#output span {
    white-space: pre-wrap;
}

#lineinput {
    display: flex;
}

#lineinput-field {
    border: 0;
    box-shadow: none;
    display: block;
    flex: 1;
    outline: 0;
    padding: 0 0 1px 0;
}

.hugowindow {
    position: fixed;
    overflow: hidden;
}

.safarifix .hugowindow {
    position: absolute;
}

#fatal-error {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 1em;
    color: #fff;
    background-color: #600;
    white-space: pre-wrap;
}

#loader {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
}

#loader-message {
    margin-top: 90px;
    text-align: center;
}

#loader.stopped #loader-message {
    text-decoration: line-through;
}

#spinner {
    position: fixed;
    font-family: serif;
    color: #888;
    top: 180px;
    left: 0;
    width: 100%;
    text-align: center;
    height: 50px;
    line-height: 100%;
    font-size: 50px;
    animation: spin 2s ease-in-out forwards;
    animation-iteration-count: infinite;
}

@-ms-keyframes spin {
    from {
        -ms-transform: rotate(0deg);
    }
    to {
        -ms-transform: rotate(360deg);
    }
}

@-moz-keyframes spin {
    from {
        -moz-transform: rotate(0deg);
    }
    to {
        -moz-transform: rotate(360deg);
    }
}

@-webkit-keyframes spin {
    from {
        -webkit-transform: rotate(0deg);
    }
    to {
        -webkit-transform: rotate(360deg);
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}


/* Text colors and font styles */

.font-bold {
    font-weight: bold;
}

.font-italic {
    font-style: italic;
}

.font-underline {
    text-decoration: underline;
}

.font-proportional {
    font-family: serif;
    font-size: 17px;
}

.font-fixed-width {
    font-family: monospace;
    font-size: 15px;
    padding: 2px 0;
}

.textcolor-0 {               /* black */
    color: #000;
}

.textcolor-1 {               /* blue */
    color: #00a;
}

.textcolor-2 {               /* green */
    color: #0a0;
}

.textcolor-3 {               /* cyan */
    color: #0aa;
}

.textcolor-4 {               /* red */
    color: #a00;
}

.textcolor-5 {               /* magenta */
    color: #a0a;
}

.textcolor-6 {               /* brown */
    color: #a50;
}

.textcolor-7 {               /* white */
    color: #aaa;
}

.textcolor-8 {               /* dark gray */
    color: #555;
}

.textcolor-9 {               /* light blue */
    color: #55f;
}

.textcolor-10 {              /* light green */
    color: #5f5;
}

.textcolor-11 {              /* light cyan */
    color: #5ff;
}

.textcolor-12 {              /* light red */
    color: #f55;
}

.textcolor-13 {              /* light magenta */
    color: #f5f;
}

.textcolor-14 {              /* yellow */
    color: #ff5;
}

.textcolor-15 {              /* bright white */
    color: #fff;
}



.bgcolor-0 {                 /* black */
    background-color: #000;
}

.bgcolor-1 {                 /* blue */
    background-color: #00a;
}

.bgcolor-2 {                 /* green */
    background-color: #0a0;
}

.bgcolor-3 {                 /* cyan */
    background-color: #0aa;
}

.bgcolor-4 {                 /* red */
    background-color: #a00;
}

.bgcolor-5 {                 /* magenta */
    background-color: #a0a;
}

.bgcolor-6 {                 /* brown */
    background-color: #a50;
}

.bgcolor-7 {                 /* white */
    background-color: #aaa;
}

.bgcolor-8 {                 /* dark gray */
    background-color: #555;
}

.bgcolor-9 {                 /* light blue */
    background-color: #55f;
}

.bgcolor-10 {                /* light green */
    background-color: #5f5;
}

.bgcolor-11 {                /* light cyan */
    background-color: #5ff;
}

.bgcolor-12 {                /* light red */
    background-color: #f55;
}

.bgcolor-13 {                /* light magenta */
    background-color: #f5f;
}

.bgcolor-14 {                /* yellow */
    background-color: #ff5;
}

.bgcolor-15 {                /* bright white */
    background-color: #fff;
}