Layout without side bar on tablet

@Christine: Thanks for finding our the issue. We will fix this in next version update. For now, you can add the following css in “Appearance => Theme Options => Custom CSS” box:

.no-sidebar-one-column #primary { width: 100%; }

@Christine: You can adjust the max-height in the following css as per your need and then add it in “Appearance => Theme Options => Custom CSS” box:
#masthead.fixed-header #site-logo img { max-height: 32px; }

@Christine: It’s because we change the size from custom css. Now you can add the following css in “Appearance => Theme Options => Custom CSS” box:

@media screen and (max-width: 980px) {	
	#masthead #site-logo img {
		max-height: 120px;
	}
	#masthead.fixed-header #site-logo img {
		max-height: 28px;
	}
}