Custom stylesheet for a light-mode Learning enviroment

So I’m trying to make a custom theme for the learning environment since the default i dislike.
Any idea of the CSS class for the highlight color on the coding bit? not the console or the lesson.
I’m using style bot for this, and this is the code so far.

The code so far:
div.view-lines.monaco-mouse-cursor-text {
background-color: #FFF;}
span.mtk1 {
color: black;}
span.mtk8 {
color: orange;}
span.mtk10 {
color: blue;}
span.mtk9 {
pre.jqconsole {
background-color: lightgoldenrodyellow;}
pre span span {
color: black;}
div.margin-view-overlays {
background-color: darkgray;} {
color: black;}
div.styles_editorInner__ZtKsm {
background-color: darkgray;}

button.styles_tab__90fcr.ejm55in0.e116l7sm0.gamut-12gsk91-ResetElement-createButtonComponent.e1bhhzie1 {
background-color: darkgray;
color: black;}
div.view-line {
background-color: #e0e8ff;}
div.styles_tabs__2q4j1.styles_theme-editor__5OqmG {
background-color: #666;
color: black;}
div.gamut-13bvm8t.e5rxebe0 {
background-color: white;
border-color: red;
border-style: solid;
cursor-line-style cursor-solid {
background-color: red;

the css on this site is too complicated for me to make sense of, or maybe the highlight is added via a js script? i dunno, that’s why I’m earning js :stuck_out_tongue: