프런트엔드 기본 사항: '내 버튼이 왜 떠 있는 걸까요?' 신규 개발자를 위한 가이드!

HTML: The structure. It’s the bones of every webpage. Imagine you’re building a house: HTML is like laying out the rooms, doors, and walls.

CSS: The style. This is where the magic happens. CSS makes your HTML look less like a grocery list and more like a finished room. Want to paint a wall blue or give your title some bling? That’s CSS.

JavaScript: The functionality. This is what brings life to your page. JavaScript is the electricity, the Wi-Fi, the thing that lets users interact with your elements in ways that feel smooth (or confusing if done poorly... but you won’t, right?).

A Code Editor: Use something like VS Code (free and packed with cool extensions).

Live Server: A little extension in VS Code that lets you see changes instantly in your browser—yes, that means no more hitting the refresh button 50 times a minute.

Chrome DevTools: You can press F12 or Ctrl+Shift+I in Chrome to inspect and debug your code, check styles, and basically peek under the hood.

<div>: A box. Think of it as a basic building block.
<h1> to <h6>: Headings. <h1> is like the main title; <h6> is a smaller subtitle.
<p>: Paragraphs. Use this for, well, paragraphs.
<img>: Images. Add pictures and pray they load correctly.

Selectors: These are how you choose which HTML elements to style. Want to make all <p> elements bold? p { font-weight: bold; }

Classes and IDs: These are more specific ways to select elements. Use classes (.myClass) for things you style multiple times, like buttons. Use IDs (#myId) for unique elements, like the main header.

Properties: Think of these like instructions. color, background-color, font-size—these are all CSS properties that’ll transform your content from plain to posh.

Variables: Store data. Think let userName = "Johnny Appleseed";.

Functions: Your mini-programs that do things. Like, function sayHello() { alert("Hello, World!"); }.

DOM Manipulation: JavaScript’s superpower is changing the HTML/CSS dynamically. You can make buttons respond, show/hide elements, or display a pop-up when you want.

<button id="clickMe">Click me!</button>

#clickMe {
  background-color: teal;
  color: white;
  padding: 10px 20px;
  border: none;
  cursor: pointer;
}

document.getElementById("clickMe").addEventListener("click", function() {
  alert("You clicked me!");
});

Practice: Go ahead and make simple projects—buttons, cards, forms. Don’t jump into big frameworks just yet; learn the basics first.

Stay Curious: Google is your friend, and Dev.to is your family. Ask questions, read posts, and keep an eye out for other beginners.

Have Fun: You’ll break stuff, you’ll get errors that make no sense, and you’ll wonder if divs are plotting against you. That’s normal. Every pro dev was once exactly where you are.