--- title: "Shivam Kumar (@shivamNov22) | Hashnode" description: "Software Engineer 1 at Netcom Learning. Read the latest articles by Shivam Kumar on Hashnode." url: "https://hashnode.com/@shivamNov22" --- @shivamNov22 # Shivam Kumar @shivamNov22 · Joined January 2026 Software Engineer 1 at Netcom Learning ### [🎯 CSS Selectors 101: Targeting Elements with Precision (Beginner Guide)](https://cssselectorblogbyshivamkumar.hashnode.dev/css-selectors-101-targeting-elements-with-precision-beginner-guide?utm_source=hashnode&utm_medium=feed) 🤔 First Question: Why Do We Even Need CSS? When you create a webpage using HTML, it looks like: Black text White background No styling 👉 HTML = Structure👉 CSS = Design CSS helps you add: Colors Spacing Layout Fonts Responsive design �... 4 min read · [cssselectorblogbyshivamkumar.hashnode.dev](https://cssselectorblogbyshivamkumar.hashnode.dev/css-selectors-101-targeting-elements-with-precision-beginner-guide?utm_source=hashnode&utm_medium=feed) [Feb 1](https://hashnode.com/posts/css-selectors-101-targeting-elements-with-precision-beginner-guide/697f61905ec951b17924bb0f) ### [🌐 How a Browser Works: A Beginner-Friendly Guide to Browser Internals](https://browserinternalsblogbyshivamkumar.hashnode.dev/how-a-browser-works-a-beginner-friendly-guide-to-browser-internals?utm_source=hashnode&utm_medium=feed) 🤔 First Question: What Happens After You Type a URL and Press Enter? When you type: https://google.com And press Enter, it feels instant. But inside the browser…👉 Hundreds of small steps happen👉 Many components work together Today we will underst... 3 min read · [browserinternalsblogbyshivamkumar.hashnode.dev](https://browserinternalsblogbyshivamkumar.hashnode.dev/how-a-browser-works-a-beginner-friendly-guide-to-browser-internals?utm_source=hashnode&utm_medium=feed) [Feb 1](https://hashnode.com/posts/how-a-browser-works-a-beginner-friendly-guide-to-browser-internals/697f5ffe5ec951b17924bb00) ### [TCP vs UDP: When to Use What & How TCP Relates to HTTP (Beginner Guide)](https://tcpvsudpblogbyshivamkumar.hashnode.dev/tcp-vs-udp-when-to-use-what-and-how-tcp-relates-to-http-beginner-guide?utm_source=hashnode&utm_medium=feed) 🤔 Step 1: Why Does the Internet Need Rules to Send Data? Imagine sending a parcel without: address ❌ tracking ❌ confirmation ❌ Parcel may: get lost arrive late arrive broken Internet also sends data packets.Without rules → chaos 😵 So inte... 4 min read · [tcpvsudpblogbyshivamkumar.hashnode.dev](https://tcpvsudpblogbyshivamkumar.hashnode.dev/tcp-vs-udp-when-to-use-what-and-how-tcp-relates-to-http-beginner-guide?utm_source=hashnode&utm_medium=feed) [Feb 1](https://hashnode.com/posts/tcp-vs-udp-when-to-use-what-and-how-tcp-relates-to-http-beginner-guide/697f5db67f2595e6eca46b0c) ### [A Complete HTML Course: Beginner to Advanced (Interview Ready)](https://htmltagsandelementsbyshivamkumar.hashnode.dev/a-complete-html-course-beginner-to-advanced-interview-ready?utm_source=hashnode&utm_medium=feed) HTML Tag 4 min read · [htmltagsandelementsbyshivamkumar.hashnode.dev](https://htmltagsandelementsbyshivamkumar.hashnode.dev/a-complete-html-course-beginner-to-advanced-interview-ready?utm_source=hashnode&utm_medium=feed) [Jan 31](https://hashnode.com/posts/a-complete-html-course-beginner-to-advanced-interview-ready/697d8fc605951487aa7d23b9) ### [🔗 TCP Working: 3-Way Handshake & Reliable Communication (Beginner Guide)](https://tcpworkingblogbyshivamkumar.hashnode.dev/tcp-working-3-way-handshake-and-reliable-communication-beginner-guide?utm_source=hashnode&utm_medium=feed) TCP Working 4 min read · [tcpworkingblogbyshivamkumar.hashnode.dev](https://tcpworkingblogbyshivamkumar.hashnode.dev/tcp-working-3-way-handshake-and-reliable-communication-beginner-guide?utm_source=hashnode&utm_medium=feed) [Jan 31](https://hashnode.com/posts/tcp-working-3-way-handshake-and-reliable-communication-beginner-guide/697d8c4f5d99a429ed5047e2)