Blog Layout

Hello,
Currently, we are using the blog grid style. We want to switch back to the featured image on the left with a snippet on the right. In General Settings, we switched the layout to single author small pic and nothing happened.
Here is the url: http://chicagoweddingblog.com/
Below is all the code in Quick CSS in case there may be a conflict.
@media only screen and (max-width: 767px){
.responsive .mobile_slide_out .logo img {
width: 80%;
height: auto !important;
padding-top: 15px;
}
}.single-post .big-preview.single-big { display: none; }
div .logo {
top: 20px !important;
}
.header-scrolled .logo {
top: 0px !important;
}

Please advise.

Cheers!