For buttons, make each section smaller and align to the left
Change the text: "Manually capture" "You will see the app running. Click on the elements you want to record." "Manual capture"
Change the text: "Start automated capture" "ReproZip-Web will attempt to capture everything." "Automated capture"
Change the text: "Upload existing file" "if you have a WACZ file ready, upload to replay the web app" "Upload existing file". Also change the button background color to #CAAED9
Change the button width and padding: vertical padding equal to font height, and set horizontal padding to 1.33 times vertical height. If a font height is 20px, vertical padding is 20px, and horizontal padding would be 27px