#blog-article iframe{width:100%;max-height:400px}@media (max-width:992px){#blog-article iframe{max-height:250px}}.post-avatar{height:48px;width:48px}.post-thumbnail .sm{width:576px}.post-thumbnail .md{width:768px;height:350px}.post-thumbnail .lg{width:1200px;height:420px}