There are free tools you spelbord can use to make test your page speeds, and maken theyll give you recommendations on what you can do maken to make things faster.
Googles Mobile-Friendly Test: Conveniently, Google provides a simple and free way to diagnose many mobile issues on your website.
Use CSS media queries to apply different stylings for different screens.
Er zijn uiteraard webdesigners waarbij een website laten maken wel tegen mobile een goede prijs/kwaliteit gebeurd.
Use elements like datalist to provide suggested values for a field.