Frontend Patterns Responsive Navbar - herougo/SoftwareEngineerKnowledgeRepository GitHub Wiki

Padding, Margin, Font Size Choices

:root {
	--clr-navbar-text: #FFF;
	--clr-navbar-link-hover: #555;
	--clr-navbar-bg: #333;
	
	/* default 16px with line-height 1.2 (may change based on font family)*/

	/* customizable */
	--line-height-root: 1.2;
	--font-size-brand-name: 1.5rem;
	--margin-brand-name: .5rem;
	--height-hamburger-icon: var(--font-size-brand-name) * var(--line-height-root);
	--margin-navbar-links: 0.5rem;
	
	/* computed */
	--height-navbar-approximate: calc(
		var(--font-size-brand-name) * var(--line-height-root)
		+ 2 * var(--margin-brand-name)
	);
	
	line-height: var(--line-height-root);
}

Code Without Padding, Margins, and Font Size

<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" href="styles_nav.css">
  <script src="script.js" defer></script>
</head>
<body>
  <div class="navbar">
    <div class="navbar__brand-name">Brand Name</div>
	<div class="navbar__hamburger-icon">
	  <button class="icon-btn" onclick="hamburgerOnClick()">
	    <img src="Hamburger_icon_white.svg" alt="Hamburger icon"></img>
	  </button>
	</div>
	<div data-hamburger-active="false" class="navbar__links">
	  <nav>
        <ul>
	      <li><a href="#">Home</a></li>
	      <li><a href="#">About</a></li>
	      <li><a href="#">Contact</a></li>
	    </ul>
	  </nav>
	</div>
  </div>
  <div style="height:2000px;"></div>
</body>
</html>
* {
	box-sizing: border-box;
	padding: 0;
	margin: 0;
}

:root {
	--clr-navbar-text: #FFF;
	--clr-navbar-link-hover: #555;
	--clr-navbar-bg: #333;
}

body {
	margin: 0;
	padding: 0;
}

.navbar {
	position: fixed;
	width: 100%;
	display: flex;
	flex-wrap: wrap; /* just in case the root font size is changed
	                    and we need to display the brand title and links
	                    on separate lines */
	align-items: center;
	justify-content: space-between;
	background-color: var(--clr-navbar-bg);
}

.navbar__brand-name {
	color: var(--clr-navbar-text);
}

.navbar__links ul {
	margin: 0;
	padding: 0;
	display:flex;
}

.navbar__links li {
	list-style: none; /* remove bullets in list */
}

.navbar__links li a {
	text-decoration: none; /* remove underlining */
	display: block;
	color: var(--clr-navbar-text);
}

.navbar__links li:hover,
.navbar__hamburger-icon:hover {
	background-color: var(--clr-navbar-link-hover);
}

.icon-btn {
	border: none;
	background-color: transparent;
	cursor: pointer;
}

.navbar__hamburger-icon {
	display: none;
}

@media (max-width: 400px) {
	.navbar__hamburger-icon {
		display: block;
	}
	
	.navbar__links {
		position: absolute;
		top: 100%;
		width: 100%;
		transform: scale(1, 0);
		transform-origin: top;
		background-color: var(--clr-navbar-bg);
	}
	.navbar {
		flex-wrap: wrap;
	}
	.navbar__links ul {
		width: 100%;
		flex-direction: column;
	}
	.navbar__links li {
		text-align: center;
	}
	
	.navbar__links[data-hamburger-active="true"] {
		transition: transform 300ms ease-in-out;
		transform: scale(1, 1);
	}
}
const navLinks = document.querySelector('.navbar__links');
const hamburgerAttrName = "data-hamburger-active";
// data-* attributes are custom

/*
const hamburgerActiveClassName = "hamburger-active";

function hamburgerOnClickOld() {
	const isHamburgerActive = navLinks.classList.contains(hamburgerActiveClassName);
	if (isHamburgerActive) {
		navLinks.classList.remove(hamburgerActiveClassName);
	} else {
		navLinks.classList.add(hamburgerActiveClassName);
	}
}
*/

function hamburgerOnClick() {
	const isHamburgerActive = navLinks.getAttribute(hamburgerAttrName) === "true";
	if (isHamburgerActive) {
		navLinks.setAttribute(hamburgerAttrName, "false");
	} else {
		navLinks.setAttribute(hamburgerAttrName, "true");
	}
}
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