Bootstrap navbar and panels disappeared from website - html

I have an angular2 website that uses bootstrap and it worked perfectly fine for 2 months. Today many of bootstrap's features just disappeared. Below is the image - the white stripe on the top is where the nav bar used to be - the navbar's title is still there, but color and other items, like login, register etc are not visible (or not there anymore). I've tried to change bootstrap 3.3.7 to 4beta, but the result is still the same...
That's how it looked before:
index.html:
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Image Annotation</title>
<base href="/">
<link rel="stylesheet" href="https://bootswatch.com/flatly/bootstrap.css">
<!--link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous"-->
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
</head>
<body>
<app-root></app-root>
<!--script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js" integrity="sha384-vFJXuSJphROIrBnz7yo7oB41mKfc8JzQZiCq4NCceLEaO4IHwicKwpJf9c9IpFgh" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js" integrity="sha384-alpBpkh1PFOepccYVYDB4do5UnbKysX5WZXm3XxPqe5iKTfUKjNkCk9SaVuEZflJ" crossorigin="anonymous"></script-->
<script src="https://code.jquery.com/jquery-3.2.1.js" integrity="sha256-DZAnKJ/6XZ9si04Hgrsxu/8s717jcIzLy3oi35EouyE=" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
</body>
</html>
navbar.component.html:
<nav class="navbar navbar-default">
<div class="container">
<div class="navbar-header">
<a class="navbar-brand" routerLink="/">Imaging Annotation and Management</a>
</div>
<div id="navbar" class="navbar-collapse collapse">
<ul class="nav navbar-nav navbar-left">
<li *ngIf="authService.loggedIn()" [routerLinkActive]="['active']" [routerLinkActiveOptions]="{exact:true}"><a routerLink="/dashboard">Dashboard</a></li>
<li><a *ngIf="authService.loggedIn()" routerLink="/profile" >Profile</a></li>
<li><a *ngIf="authService.loggedIn()" routerLink="/anno" >Annotation</a></li>
<li><a *ngIf="!authService.loggedIn()" routerLink="/login" >Login</a></li>
<li><a *ngIf="authService.loggedIn()" href="#" (click)="onLogoutClick()">Logout</a></li>
<li *ngIf="!authService.loggedIn()" [routerLinkActive]="['active']" [routerLinkActiveOptions]="{exact:true}"><a routerLink="/register" >Register</a></li>
</ul>
</div>
<!--/.nav-collapse -->
</div>
</nav>


I'm back in business)) the problem was with this code:
<link rel="stylesheet" href="https://bootswatch.com/flatly/bootstrap.css">
I switched to standard bootstrap and it now works:
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

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This is what i have :
Also the collapse-navbar is not working , when I reduce the screen the collapse button appears but nothing happens when I click...
This is my codebase : Codebase

Here is a working example with Bootstrap, hope it is to any help:
.test {
color: white;
margin-left: 10px;
}
<!doctype html>
<html lang="en">
<head>
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<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
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<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<title>Hello, world!</title>
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<body>
<div id="app" class="container-fluid">
<nav class="navbar navbar-expand-md navbar-light bg-dark">
</button>
<div class="collapse navbar-collapse" id="navbarNav">
<ul class="navbar-nav mr-auto">
<h1 class="test" href="#">Funds.</h1>
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<ul class="navbar-nav">
<li class="nav-item">
<a class="test" href="#">Use funds for business </a>
</li>
<li class="nav-item">
<a class="test" href="#">Pricing</a>
</li>
<li class="nav-item">
<a class="test" href="#">Legal stuff</a>
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</nav>
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<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
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Bootstrap Navigation bar won't show

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<!DOCTYPE html>
<html lang = "en">
<head>
<meta charset ="utf-8">
<meta name= "viewport" content = "width=device-width, initial-scale =1">
<title>Solution Assignment Module-3!</title>
<link rel="stylesheet" href="css/bootstrap.min.css">
<link rel="stylesheet" href="css/styles.css">
</head>
<body>
<header>
<nav id="header-nav" class="navbar navbar-default">
<div class="container">
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</nav>
</header>
<script src="js/jquery-3.5.1.min.js"></script>
<script src="js/bootstrap.min.js"></script>
<script src="js/script.js"></script>
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You got this error because you added latest version of bootstrap CSS file and "navbar-default" not supported on latest version.
You can use older version of bootstrap CSS like I did here or add latest nav bar code according to latest version of bootstrap.
You can try this code.
<!DOCTYPE html>
<html lang = "en">
<head>
<meta charset ="utf-8">
<meta name= "viewport" content = "width=device-width, initial-scale =1">
<title>Solution Assignment Module-3!</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
<link rel="stylesheet" href="css/styles.css">
</head>
<body>
<header>
<nav id="header-nav" class="navbar navbar-default">
<div class="container">
<ul class="nav navbar-nav mr-auto">
<li class="nav-item active">
menu1
</li>
<li class="nav-item">
menu2
</li>
<li class="nav-item">
menu3
</li>
<li class="nav-item">
menu4
</li>
<li class="nav-item">
menu5
</li>
</ul>
</div>
</nav>
</header>
<script src="https://code.jquery.com/jquery-3.5.1.min.js" integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
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I'm designing a website and have a problem. I use the Glyphicon of bootstrap 3.0.0 to design a picture icon "Cart". However,it do not working. My Error like this picture. Please help me!
Thanks you watching
This code below:
<!--import CSS-->
<link href="../bootstrap/bootstrap.css" rel="stylesheet"/>
<link href="../bootstrap/bootstrap.min.css" rel="stylesheet"/>
<link href="../effect/hover.css" rel="stylesheet"/>
<link href="../css/effecttext.css" rel ="stylesheet"/>
<link href="../effect/hover-min.css" rel="stylesheet"/>
<link href="../css/style.css" rel="stylesheet"/>
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-------------------------------------------
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<script src="main.js"></script>
<script type="text/javascript" src="../js/jquery-3.1.1.min.js"></script>
<script type="text/javascript" src="../js/jquery-3.3.1.js"></script>
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Try Adding CDN
Also Remove following lines
<link href="../bootstrap/bootstrap.min.css" rel="stylesheet"/>
And
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So I was wondering how to change the H1 font-family in Bootstrap 4? Can't seem to get it right.. I'm kind of new to this bootstrap thing, so I followed a tutorial on Youtube, but they didn't explain how to change the font-family..
See the code here: (I deleted my css, because it didn't work at all and I honestly didn't even know what I was doing)
<div class="container">
<h1 class="display-2">Hello, World!</h1>
<p class="lead">This is a paragraph, you can say a lot of things in here!.</p>
</div>
FULL CODE:
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="stylesheet.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous">
<nav class="navbar navbar-expand-sm navbar-light bg-info">
<button class="navbar-toggler" data-toggle="collapse" data-target="#mainNav">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="mainNav">
<div class="navbar-nav">
<a class="nav-item nav-link active" href="index.html">Home</a>
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<div class="container">
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<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js" integrity="sha384-vFJXuSJphROIrBnz7yo7oB41mKfc8JzQZiCq4NCceLEaO4IHwicKwpJf9c9IpFgh" crossorigin="anonymous"></script>
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You are loading the style sheets in the wrong order - first needs to be the Bootstrap css and then yours (assuming that stylesheet.css is where you are setting the alternate font-family on the h1) - so that your can overwrite the BS styles- AFTER loading bootstrap. The following shows the order the stylesheets should be loaded :
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous">
<link rel="stylesheet" href="stylesheet.css">
As a demo of the alternate font family:
The following shows 2 h1's - and I am loading in an alternate font family
.alternate-font {
font-family:"Montserrat"
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<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous">
<link href="https://fonts.googleapis.com/css?family=Montserrat:300,400,500,600" rel="stylesheet">-
<h1>This is a h1 using standard bootstrap h1 font-family</h1>
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Navbar align items in a row

I'm trying to get my navbar items to align rather than stack. I switched from bootstrap 3 to 4 (beta 2) and for some reason it doesn't nicely align anymore but remains stacked. Here is my code:
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>index__</title>
<link href="https://fonts.googleapis.com/css?family=Raleway" rel="stylesheet">
<link href="https://fonts.googleapis.com/css?family=Roboto:300,400,700" rel="stylesheet" type="text/css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous">
</head>
<body>
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
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<nav class="navbar fixed-top">
<div class="container">
<span class="pull-left">
<a href="#" class="navbar-brand">
<img src="img/gyn_sm.png" alt="">
</a>
</span>
<ul class="nav navbar-nav ml-auto">
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<li>two</li>
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</div>
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Look at this updated JSFiddle to get the answer. Your .navbar-nav gets display: flex;, but not its direction. Adding this to the CSS as:
.navbar-nav {
flex-direction: row;
}
will fix it. Read more about flex-direction on MDN.