Bootstrap navbar doesnt seem to be displaying correctly

<nav style="background-color:#ffffff;" id="quick-tool-nav" class="navbar navbar-expand-lg navbar-light ">
                              <a style="color: black; margin-right: 50%" class="navbar-brand" href="#">Quick Tools</a>
                              <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#rbtNavbar" aria-controls="navbarTogglerDemo02" aria-expanded="false" aria-label="Toggle navigation">
                                <span class="navbar-toggler-icon"></span>

 <!-- Tabs -->
						<div class="collapse navbar-collapse active" id="rbtNavbar">
							<ul class="nav navbar-nav">

								<!-- 1st Tab Button -->
								<li class="active">
									<a data-toggle="tab" href="#simple_1">
										<i class="fa fa-heart-o"></i>
                                <li >
									<a data-toggle="tab" href="#simple_2">
										<i class="fa fa-heart-o"></i>
                                   <li >
									<a data-toggle="tab" href="#simple_3">
										<i class="fa fa-heart-o"></i>


							</ul> <!-- /.nav.navbar-nav -->
						</div> <!-- /Tabs -->

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anyone see why my nav looks like this ?

Alex LordAsked:
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could you elaborate, what is the problem?
is this because you don't see fontawesome Icon?

Make sure you include fontawesome Icon script

using Chrome right click inspect and check error in console

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