Having a website means your visitors will go through the phone by scrolling and this is done through mobile devices. However, view from multiple devices your site so that you know how to test site functionality and the way it looks. You may send to your friends and family your website link and ask them their opinion about the website design appearance.
Considering others opinion is a must so that you know if your website and the design are correct or not. If it is less than satisfactory, you may consider hiring a web designer so that you get that you want to appear outstanding.