Change Blog Post Page List Appearance

Hi,
Is it possible to change the appearance of how my blog posts are displayed on my blog page:
http://www.closetsamples.com/blog-posts/

I would like to have my blog images in a thumbnail image to the left with my text excerpt to the right of the thumbnail possibly with a box around each post or the option of using a page divider between posts.

Is any customization possible or where would I go/what code would I want to look for to do these customizations?

Thanks!

 

Set size to thumbnail and alignment to left while uploading post image.
Check image for reference.


And paste this code in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

.content-bar .post .post_content img.postimg {
margin-right: 30px;
float:left;
}
.post_content p {
padding-top:20px;
}

 

Would this change the appearance to the blog post list? That's what I'm looking to change, not the post itself, just the appearance of the latest posts and how they're displayed.

 

Ok, For this paste this code in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

.content-bar .post .post_content img.postimg {
width:200px;
margin-right: 30px;
float:left;
}
.post_content p {
padding-top:20px;
}

 

That code didn't do anything when I updated it. My posts still show like they normally do on the blog list.

 

Cancel that, I had put an error in my code. It works! Thanks!!