how to remove box lines around picture blog posts ?

Here is an example that shows how to do that:
http://en.forums.wordpress.com/topic/how-to-remove-image-border-in-forever-theme?replies=3#post-1110799

To move the date/time above post titles in the Forever theme, add this to your Appearance → Custom Design → CSS editor:

.entry-header {
	padding-top: 18px;
}
.entry-header .entry-meta {
	position: absolute;
	top: 0;
}

That will adjust the overall width of the space for the entry meta and make the border that was there before look smaller. If you want to get rid of that border, add this:

.entry-header .entry-meta {
	border: none;
}

also
how to remove box lines around picture blog posts ?

any help..please??