Align featured image on post

Hi!
I see this is a child theme of twentyfourteen. How confident are you with CSS?

The problem is that the image is not big enough for the box. There are 3 possible solutions:
1. make the image bigger in something like photoshop and re-upload it
2. Change the CSS for the image from

.full-width .post-thumbnail img {
	display: block;
	margin: 0 auto; }

to

.full-width .post-thumbnail img {
	display: block;
	width:100%;
	height:auto;
}

3. get rid of the background stripes so it doesn’t appear too small

.post-thumbnail {
	/* background: #b2b2b2 url(images/pattern-light.svg) repeat fixed; */
	display: block;
	position: relative;
	width: 100%;
	z-index: 0;
}

Thanks

:0( I’ve tried everything you posted and still no luck.

I uploaded a full size 14mp image to see if that would work but no change.

I copied and pasted #3 into the ‘Edit CSS’ and when that didn’t work I tried it in the ‘Editor’ on my dashboard.

I looked for the code you mentioned in steps #1&2 so that I could change it but I couldn’t find it anywhere.

Thanks again for your help, mistergc.

Hello!
You’ve changed your site quite a lot since I last saw it! Do you still need help with this problem?

I’m not sure why such a large file wouldn’t fill the space as you had the site before… the only thing I can think is that you selected the ‘medium’ setting in the images library instead of ‘large’ or ‘full size’ when you were inserting the image into the post.

Thanks

Hi,
I just played with the ‘inspect element’ tool while viewing my pages in my browser and I did get it to sit properly but it didn’t save and when I copied and pasted the css into my editor it didn’t do anything.

I was at it nearly all day yesterday and I’ve given up on the featured item for now. Once I get the site up and running I’ll concentrate on the little touches.

Thank you very much for your help. I appreciate that.