Enhace Woocommerce CCS

I am looking for a professional to help me configure some CSS codes that for some reason are not in accordance with the structure of the WooCommerce checkout page template in WordPress.There are 6 requirements that we need to change in that template. Change the size of the template, change the color of some texts, change the font and add two pill-shaped or round buttons.The explanation of the requirements will be sent to the selected professional. Thank you!