The Shopify community states that you can update the size of the slideshow images in section slideshow.liquid. You may also try to go to the theme.scss.liquid and update the following code: .slideshow {
overflow: hidden;
height: $slideshow-height-small - 150;
margin-bottom: 0;
According to the comments posted at community.shopify.com, to resize the logo in Shopify, to resize the logo, please follow these steps:
login to your store;
click Customize > Header;
there you can see 'Custom logo width (in pixels)' just increase the value;
click save.