notebook.css

.output {
    font-family: ariel;
    align-items: normal;
    text-align: normal;
}

div.output_svg div { margin : auto; }
.div.output_area.MathJax_Display{ text-align: center; }
div.text_cell_render { font-family: sans-serif; }

details {
    margin: 20px 0px;
    padding: 0px 10px;
    border-radius: 3px;
    border-style: solid;
    border-color: black;
    border-width: 2px;
}
details div{padding: 20px 30px;}
details summary{font-size: 18px;}

table {
     margin: calc(auto + 10px) !important;
     border: solid !important;
 }

 th, td {
    text-align: left !important;
 }

 .further_box {
    background-color:rgb(230, 230, 230);
    border-style: solid;
    margin: 10px 10px 10px 0px;
    padding: 10px;
    left:calc(auto - 20px);
 }

 .question_box {
    background-color:rgb(255, 255, 225);
    border-style: solid;
    margin: 10px 10px 10px 0px;
    padding: 10px;
    left:calc(auto - 20px);
 }