Dark theme for Cengage WebAssign

webassign-dark-theme.css

/*
    WebAssign Dark Theme by Fasteroid
    Revision 11
*/
@-moz-document url-prefix("https://www.webassign.net/web/Student") {
.mainContainerLayout {
    display: grid;
    min-height: 100%;
    grid-template-rows: auto 1fr auto;
    background: #222;
}

.waQBox > .qUtility > .standard {
    background: #333;
}

.waQBox > .qUtility > .standard,
.waQBox > .qUtility > .crop {
    margin: 0;
    border: 0px solid #000;
    font: normal 13px/20px verdana, helvetica, sans-serif;
    -moz-border-radius: 0 0 4px 0;
    -webkit-border-radius: 0 0 4px 0;
}

.tex2jax_ignore, .qContent .wa1par,
.qContent .sublabel,
.qContent .wa1ans {
    color: #ddd;
}

.previousAnswersContainer .container.popupWrap .middle .qResponse {
    background: #333;
    border: 1px solid #555;
    border-radius: 2px;
    padding: 15px 0;
    margin-bottom: 20px;
}

.previousAnswersContainer .container.popupWrap, .previousAnswersContainer .container.popupWrap .popupContent, .previousAnswersContainer .container.popupWrap .middle, .allResponses .previousAnswersContainer, .dj_webkit .dj_chrome .dj_contentbox {
    background: #222 !important;
    border-radius: 0px;
}

.previousAnswersContainer .container.popupWrap .middle {
    background: #222;
    border: 20px solid #222;
    border-radius: 0px;
}

.previousAnswersContainer .container.popupWrap .waQBox .top .title {
    align-items: baseline;
    background: #333;
    border-right: 0;
    border-left: 0;
    color: #eee;
    display: flex;
    font: normal 1rem 'Open Sans', sans-serif;
}

.css-jsfayd {
    background: #222;
    border-radius: 10px;
}

.static, .qTextField > input {
    color: #ccc !important;
    display: inline;
    margin: 0.1em;
    padding: 0.1em;
    background: #2a2a2a;
    border: 1px solid #555;
}

font, span[style*="color: #dd0000"]  {
    color: #f22 !important;
    font-weight: bold;
}

article > *, .css-l1j587, .css-1nohyfr, .css-61mckp, .css-1xtak44, .css-tk5eh5, .css-ydjurp {
    background-color: #333 !important;
    border: 0px solid #000 !important;
    color: #ddd !important;
}

.css-2ckidu, .css-lal50k, .css-ksgbli {
    border-color: #222;
}

.css-113dhmn, .css-lal50k, .manualGrading > * > p, .css-ivbv8a  {
    color: #ddd;
}

.waQBox, .waQBox>.qUtility>.qButtons {
    background: #333;
    border: 0px solid #eee;
}

.css-5ijub1 > *, .css-6xh4hr, .css-1d5sdls > div {
    color: #ccc !important;
}
.css-mzz8f4-BaseStyledButton, .css-nvle0d-BaseStyledButton {
    background: rgb(0, 98, 152);
    border: 0px rgb(0, 98, 152);
    color: #ddd;
    text-transform: none;
}

.css-mrxdza-StyledCard.css-mrxdza-StyledCard {
    background: rgb(0, 98, 152);
    border-radius: 0px;
    font-family: "Open Sans", sans-serif;
    border: 3px solid rgb(0, 98, 152);
}

.section_content {
    background-color: rgb(26, 67, 89) !important;
}

.css-1ro0y4x, .css-14spuex, .css-gaa69a{
    background: #2a2a2a;
    border-width: 2px;
    border-color: #222

}

.css-3nzxcx, .css-1elzpo0, .css-16r17sf {
    background: #333;
    border-width: 2px;
    border-color: #222
}

.css-a121ts, .css-11flc95, .css-19dp8pl {
    padding: 0.5rem 0.4rem 1.875rem;
    margin: 0px 0.2rem;
}

a, a:link, a:active, a:visited {
    color: #88f;
    cursor: pointer;
    font-weight: normal;
    text-decoration: none;
}

.waQBox>.qAlert {
    background: #333;
    border-left: 1px solid #ff0;
    border-bottom: 1px solid #ff0;
    border-right: 1px solid #ff0;
}

.css-a121ts {
    background: #333
}

.css-3nzxcx:hover, .css-3nzxcx:focus, .css-3nzxcx:active, .css-1ro0y4x:hover, .css-1ro0y4x:focus, .css-1ro0y4x:active, .css-gaa69a:hover, .css-gaa69a:focus, .css-gaa69a:active, .css-14spuex:hover, .css-14spuex:focus, .css-14spuex:active  {
    background-color: #666;
}

/* Correct/Partial/Incorrect Colors */
.css-19dp8pl, .css-1i1pfxt {
    background: #2c3925;
}

.css-11flc95 {
    background-color: #483e20;
}

.css-1qv5qzw {
    background-color: #402626
}
    
/* Everything below inverts math */
.watexparenimage > img,
.watexsqrtradicalcontent > img,
nobr > img {
    filter: invert(1)
}

.cap-btm-rit > img {
    filter: drop-shadow(0 0 2px #ffffff) drop-shadow(0 0 2px #ffffff) drop-shadow(0 0 2px #ffffff) drop-shadow(0 0 2px #ffffff)
}

.watexfraction .watexdenominator, .watexsqrtradicandcontent {
    border-top: 1px solid;
}
}

Glad to see it's still finding use!