.web-preview .previewer
{
   width: 100%;
   height: auto;
   min-height: 325px;
   max-height: 960px;
   text-align: center;
}

.web-preview .previewer .message
{
   text-align: center;
   padding-top: 125px;
   line-height: 1em;
}

.web-preview .previewer video
{
   max-height: 325px;
}