Resolving null type error in flutter

CSS is used on every website that you see on the internet, but do you know what it really is? 👀 To explain CSS shortly, it is the language used to determine the style you want your HTML document to have. You can’t do much with CSS without having a HTML document to apply it to. 🧩 While a HTML document is like a canvas, CSS is like the paint with endless number of colors and possibilitites. With CSS, there are no limits of how detailed and advanced you can style your HTML document. 🎨 By learnin