The Divi theme logo size has a larger state before the user starts to scroll down the page and then a smaller state when scrolling begins. To edit the sizes of the logo in the 2 states, just add the following code into your child themes CSS file (or into the Divi theme options if you are not using a child theme)
.et_fixed_nav #logo {
max-height: 90px;
}
.et-fixed-header #logo {
max-height: 45px;
}
Edit the numbers as required and hey presto, you have now changed the size of your logo in the Divi theme 🙂
FYI, the default Divi logo that you see on the Divi demo site is 93px x 43px
