As the optimum speed of website is the goal right know to get a good Google ranking So website design using bootstrap with svg images will be the biggest trend this year. CMS based websites are also trending but due to bit slow initial server response, it will be 2nd choice.
I can highlight three web design trends: 1. Scrolling transformations 2. Parallax animation 3. Abstract art compositions
I do believe that by the end of this year and the beginning of the next year, 5G will be available in most places. The greatly higher speeds on all devices with 5G could make a big difference to the design of the sites and apps.