This is customization for the Divi WordPress theme. For more customizations, click here: Divi Theme Customizations
Use this code when you want to show a separate logo on mobile than the logo shown on desktop. This is set for devices 481 pixels wide and less, and you can change that setting by changing the value.
/*Different logo on mobile*/ @media only screen and (max-width: 481px) { .et_show_nav #logo { content: url('put_image_url_here') !important; } header#main-header { padding-top: 0px !important; } }