@ Steve038

I also have the same problem with you, it took me 2 days
every things seem very simple and i already do all, but it still not work !!!
the css in firebug show still

.vbcms_content img {
max-width: 100%;
}
css.ph...ud.css, (line 1669)
.cms_article_preview_image {
max-height: 150px;
max-width: 150px !important;
}

Could you share the way to do

many thanks in advance

my site iss: http://xommohinh.com

the max-width !important is causing your issue just like it caused his.

thank Lynne for your reply
but i just tried both have and no have !important;
in vbcms.css

my code here:

.cms_article_preview_image {
max-height: 250px;
max-width: 300px;
}

But it still not work :( in firebug the code still:
.vbcms_content img {
max-width: 100%;
}
css.ph...ud.css, (line 1669)
.cms_article_preview_image {
max-height: 150px;
max-width: 150px !important;
}

It seem not affect, so what's my problem here ???

An !important will overrule anything you add because that is what an !important does. You need to remove it or override it.

oh, thank Lynne

i already find out my problem.
I have 2 copies of forum, one in the host site and the other in my local,
when i do change in local it is not affect because it still in host and now i fix the url of my forum in local, it's definitely work

one again thank to you and best wish !