bootstrap navbar not working correctly

Perhaps the path to your bootstrap.min.css is collapsed? I just added this link to your header <link rel=”stylesheet” href=”https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css” integrity=”sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u” crossorigin=”anonymous”> and pointed to the data-target=”#bs-example-navbar-collapse-1″. It seems working now.

Bootstrap 4, How do I center-align a button?

In Bootstrap 4 one should use the text-center class to align inline-blocks. NOTE: text-align:center; defined in a custom class you apply to your parent element will work regardless of the Bootstrap version you are using. And that’s exactly what .text-center applies. Expand snippet If the content to be centered is block or flex (not inline-), … Read more

What is a “meta component” in the context of bootstrap or as a general web design term?

meta component is a component that consists some other components , for example bootstrap navbar consists navbar container , navbar header and navbar collapse. In other words meta components is a collection of other components and have no special feature for themselves in most cases. see the following link it may help. https://bootstrapious.com/p/bootstrap-navbar

How can I center an image in Bootstrap?

Image by default is displayed as inline-block, you need to display it as block in order to center it with .mx-auto. This can be done with built-in .d-block: Or leave it as inline-block and wrapped it in a div with .text-center: I made a fiddle showing both ways. They are documented here as well.

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