problem thumbnail

you can visit http://www.bagas.id/ask from your smartphone, you can see a bigger thumbnail

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

@media only screen and (max-width: 992px) {
.dwqa-container .dwqa-question .dwqa-header .dwqa-author img {
    width: auto;
}
}

Regards,

Where i put this code ? Start code of css or end code of css ?

Style.css in my theme or on dwqa theme ?

Please send me username & password of your site, I will help you to fix this issue.
Regards,