Create a Responsive Navbar Sidebar "Drawer" in Bootstrap

Bootstrap 5 introduces an official Offcanvas Component that simplifies the creation of sidebars. However, creating a sidebar without the component is still possible.

Considerations for Sidebar Navs

Sidebar navigation menus can pose various challenges:

• Responsiveness: Should the sidebar adjust its width, visibility, or orientation based on screen size?
• Multi-level: Should the nav items include sublevels, and how will their height be accommodated?
• Toggling: Can the sidebar be toggled using a button or an icon?
• Positioning: Should the sidebar be positioned alongside or behind page content?
• Placement: Should the sidebar appear on the left or right side?
• Scrolling: How should the sidebar scroll in relation to the page?
• Animation: Should the sidebar slide, collapse, or fade into view?

Recommended Approach

In this specific case, instead of using col-auto on the right column, consider using col to fill the width when the menu is collapsed:

<div class="container-fluid h-100">
  <div class="row h-100">
    <div class="col-5 col-md-3 collapse width m-0 p-0 h-100 bg-dark">

Enhanced Sidebar with Fixed Width

The following updated sidebar is closer to the example you provided and features a fixed width, adaptive behavior, and a slide-left/right animation:

/* Set sidebar width */
.w-sidebar {
    width: 200px;
    max-width: 200px;
}

/* Adjust sidebar on collapsing */
.row.collapse {
    margin-left: -200px;
    left: 0;
    transition: margin-left .15s linear;
}

.row.collapse.show {
    margin-left: 0 !important;
}

/* Adjust sidebar on collapsing */
.row.collapsing {
    margin-left: -200px;
    left: -0.05%;
    transition: all .15s linear;
}

Full-Featured Sidebar

This advanced sidebar includes additional functionality:

• Fixed width
• Adaptive behavior (Collapses or overlays based on screen size)
• Toggling
• Responsive (Becomes an overlay on smaller screens)

/* Optional for overlay sidebar on small screens */
@media (max-width:768px) {

    .row.collapse,
    .row.collapsing {
        margin-left: 0 !important;
        left: 0 !important;
        overflow: visible;
    }
    
    .row > .sidebar.collapse {
        display: flex !important;
        margin-left: -100% !important;
        transition: all .3s linear;
        position: fixed;
        z-index: 1050;
        max-width: 0;
        min-width: 0;
        flex-basis: auto;
    }
    
    .row > .sidebar.collapse.show {
        margin-left: 0 !important;
        width: 100%;
        max-width: 100%;
        min-width: initial;
    }
    
    .row > .sidebar.collapsing {
        display: flex !important;
        margin-left: -10% !important;
        transition: all .2s linear !important;
        position: fixed;
        z-index: 1050;
        min-width: initial;
    }
}

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