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v 1.9.51

Custom css



var myCss = {
    question: {
        content: "sd-question__content question_content_custom",
        titleOnAnswer: "question-title-answered"

                    var json = {
  "elements": [
      "type": "radiogroup",
      "name": "one",
      "title": "Radiogroup question",
      "choices": [ "Yes", "No" ]

                    window.survey = new Survey.Model(json);
            survey.onComplete.add(function(sender) {
            document.querySelector('#surveyResult').textContent =
            "Result JSON:\n" + JSON.stringify(, null, 3);
            model: survey ,css: myCss


<!DOCTYPE html>
<html lang="en">
    <title>Custom css, jQuery Survey Library Example</title>
<meta name="viewport" content="width=device-width" />
    <script src=""></script>
    <script src="/DevBuilds/survey-jquery/survey.jquery.min.js"></script>
    <link href="/DevBuilds/survey-core/defaultV2.min.css" type="text/css" rel="stylesheet" />
    <link rel="stylesheet" href="./index.css">

<body style="margin: 0">
            <div id="surveyElement" style="display:inline-block;width:100%;">
    <div id="surveyResult"></div>

<script type="text/javascript" src="./index.js"></script>


.question_content_custom {
    border: 1px solid lightgray;
    border-radius: 5px;
    border-left: 4px solid #18a689;
    padding: 10px;
    margin: 10px 0;

.question-title-answered {
    background-color: lightblue;

Set the css property to override the required css class(s).

Currently you may override the following css classes: