1. Problem:
You don't follow consistency in the color of the CTA-buttons, which adds more cognitive load to users. At the previous step they saw brown CTA-buttons, but then on the Cart page, you use black color for the main CTA-buttons. It's not good in terms of design.
Recommendation:
Use the same color of the CTA-buttons across the whole website, so it will have a less cognitive load for users.
2. Problem:
You have a section with payment methods icons below the Checkout button. But all the icons are in black color. Let me ask a question: have you ever seen a Visa or MasterCard icon in black color? Nope, they have certain colors and use them everywhere. If your goal is to show well-known payment methods icons to your users, don't use unique colors.
Recommendation:
Change the payment method icons image where all icons will be in the brand color
3. Problem:
It's very important for many users on the Cart page to know what is the shipping fee. I see that you offer free shipping, but you display it at the top (so when users a little bit scroll down the page, they will not see it anymore) and at the bottom of the page (where the majority of users will not see it, as the majority will not scroll further down than the Checkout button).
Recommendation:
Consider adding a free shipping notification somewhere closer to the Checkout button, so when users will decide if they want to proceed to Checkout, that advantage will be visible. You can add a line - "Shipping - Free" or a separate section about it.
I hope these recommendations will be useful to you. Feel free to ask any questions.
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