How to post images on my blog with a pre-defined border
this is more a css problem than wordpress related – check style.css of your theme: the ‘border’ (actually a padding with background image) is only set for left, right, and center aligned images (like those from your first link), not for those with .alignnone (those from your second link): #content img.alignleft, #content img.alignright, #content img.aligncenter … Read more