CSS
Responsive Navigation Bar with Flexbox
Build a flexible navigation bar that adapts to screen sizes, displaying horizontally on large screens and stacking vertically on smaller devices using Flexbox and media queries.
/* HTML Structure */
<nav class="navbar">
<a href="#" class="brand">MySite</a>
<ul class="nav-links">
<li><a href="#">Home</a></li>
<li><a href="#">About</a></li>
<li><a href="#">Services</a></li>
<li><a href="#">Contact</a></li>
</ul>
</nav>
/* CSS */
.navbar {
display: flex;
justify-content: space-between;
align-items: center;
background-color: #444;
padding: 10px 20px;
color: white;
}
.brand {
font-weight: bold;
font-size: 1.5em;
text-decoration: none;
color: white;
}
.nav-links {
list-style: none;
margin: 0;
padding: 0;
display: flex;
}
.nav-links li a {
display: block;
padding: 10px 15px;
text-decoration: none;
color: white;
}
.nav-links li a:hover {
background-color: #555;
}
@media (max-width: 768px) {
.navbar {
flex-direction: column;
align-items: flex-start;
}
.nav-links {
flex-direction: column;
width: 100%;
}
.nav-links li {
width: 100%;
text-align: center;
}
.nav-links li a {
padding: 12px 0;
border-top: 1px solid #555;
}
.nav-links li:last-child a {
border-bottom: 1px solid #555;
}
}
How it works: This snippet creates a responsive navigation bar using Flexbox. The `.navbar` is a flex container with `justify-content: space-between` to separate the brand and links. The `.nav-links` list is also a flex container to lay out its items horizontally. A media query is used to transform the layout on smaller screens (`max-width: 768px`), changing the `flex-direction` of both the `.navbar` and `.nav-links` to `column`, resulting in a stacked vertical menu.