IPython/html/static/notebook/less/codecell.less

div.code_cell {
    /* avoid page breaking on code cells when printing */
    @media print {
        page-break-inside: avoid;
    }
}

/* any special styling for code cells that are currently running goes here */
div.code_cell.running {
}

div.input {
    page-break-inside: avoid;
    .hbox();
}

@media (max-width: 480px) {
    // move prompts above code on small screens
    div.input {
        .vbox();
    }
}

/* input_area and input_prompt must match in top border and margin for alignment */
div.input_prompt {
    color: @input_prompt_color;
    border-top: 1px solid transparent;
}

// The styles related to div.highlight are for nbconvert HTML output only. This works
// because the .highlight div isn't present in the live notebook. We could put this into
// nbconvert, but it easily falls out of sync, can't use our less variables and doesn't
// help the basic template when paired with our CSS.

div.input_area > div.highlight {
    margin: @code_padding;
    border: none;
    padding: 0px;
    background-color: transparent;
}

div.input_area > div.highlight > pre {
    margin: 0px;
    border: none;
    padding: 0px;
    background-color: transparent;
}