CSS and JavaScript frameworks
If you are building a responsive website, for mobiles as well as for desktop, I think you need to use a CSS/JavaScript framework. Some people can argue that using a framework can decrease your site's performance because of the unwanted component that bundles up with the framework. There are some components in the framework that you are never going to use. However, I have a different opinion in this regard. Most of the frameworks now have the option to choose. With the components that we are going to have and as per our requirement, we can customize our framework. Using this customizing option, we can get the following benefits of frameworks:
You don't have to be a professional programmer to build a website
Using a framework will drastically cut down our development time, and you can invest that saving on performance optimization
You can plug in new components with ease
The framework code is well tested and has a lot of community support
You will get regular updates...