Column 1 Content Here’s a fully responsive vertical navigation menu built with only HTML and CSS — no JavaScript required. It uses the CSS :checked pseudo-class with a hidden checkbox to toggle the menu on smaller screens. HTML + CSS Code Html How It Works Checkbox Toggle The hidden checkbox (#menu-checkbox) is linked to the label (.menu-toggle). When clicked, it changes the :checked state. CSS-Only Show/Hide In mobile view (max-width: 767px), the menu is hidden by default. When the checkbox is checked, the adjacent ul is displayed. Responsive Behavior On larger screens, the menu is always visible as a vertical sidebar. On smaller screens, it collapses into a hamburger menu. If you want, I can also make a sliding animation so the vertical menu smoothly appears from the side without JavaScript. Do you want me to add that?

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