“Details” Heading missing

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Same issue can also be seen here http://demo.designwall.com/dwqa/ask-question/
The heading /title of second box is missing.

You can add the following code to the style.css file:

div#wp-question-content-wrap:before {
    content: "Question detail";
    text-transform: capitalize;
    font-weight: bold;
    left: 0;
    top: 0;
    position: absolute;
}
div#wp-question-content-wrap { position: relative;}