Dealing with Bootstrap mobile menu icon

Bootstrap Code
Output
<!DOCTYPE html>
<html>
<head>
    <title>navbar example</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" integrity="sha384-0mSbJDEHialfmuBBQP6A4Qrprq5OVfW37PRR3j5ELqxss1yVqOtnepnHVP9aJ7xS" crossorigin="anonymous"></script>

<style>
.inputstl { 
    padding: 9px; 
    border: solid 1px #4B718B; 
    outline: 0; 
    background: -webkit-gradient(linear, left top, left 25, from(#FFFFFF), color-stop(4%, #CDDBE4), to(#FFFFFF)); 
    background: -moz-linear-gradient(top, #FFFFFF, #CDDBE4 1px, #FFFFFF 25px); 
    box-shadow: rgba(0,0,0, 0.1) 0px 0px 8px; 
    -moz-box-shadow: rgba(0,0,0, 0.1) 0px 0px 8px; 
    -webkit-box-shadow: rgba(0,0,0, 0.1) 0px 0px 8px; 

    } 
    
.menucls {
  background-color: #69899f;
  border-color: #425766;
}
.menucls .navbar-brand {
  color: #d7e2e9;
}
.menucls .navbar-brand:hover, .menucls .navbar-brand:focus {
  color: #e5dbdb;
}
.menucls .navbar-text {
  color: #d7e2e9;
}
.menucls .navbar-nav > li > a {
  color: #d7e2e9;
}
.menucls .navbar-nav > li > a:hover, .menucls .navbar-nav > li > a:focus {
  color: #e5dbdb;
}
.menucls .navbar-nav > li > .dropdown-menu {
  background-color: #69899f;
}
.menucls .navbar-nav > li > .dropdown-menu > li > a {
  color: #d7e2e9;
}
.menucls .navbar-nav > li > .dropdown-menu > li > a:hover,
.menucls .navbar-nav > li > .dropdown-menu > li > a:focus {
  color: #e5dbdb;
  background-color: #425766;
}
.menucls .navbar-nav > li > .dropdown-menu > li > .divider {
  background-color: #69899f;
}
.menucls .navbar-nav > .active > a, .menucls .navbar-nav > .active > a:hover, .menucls .navbar-nav > .active > a:focus {
  color: #e5dbdb;
  background-color: #425766;
}
.menucls .navbar-nav > .open > a, .menucls .navbar-nav > .open > a:hover, .menucls .navbar-nav > .open > a:focus {
  color: #e5dbdb;
  background-color: #425766;
}
.menucls .navbar-toggle {
  border-color: #425766;
}
.menucls .navbar-toggle:hover, .menucls .navbar-toggle:focus {
  background-color: #425766;
}
.menucls .navbar-toggle .icon-bar {
  background-color: #d7e2e9;
}
.menucls .navbar-collapse,
.menucls .navbar-form {
  border-color: #d7e2e9;
}
.menucls .navbar-link {
  color: #d7e2e9;
}
.menucls .navbar-link:hover {
  color: #e5dbdb;
}

@media (max-width: 767px) {
  .menucls .navbar-nav .open .dropdown-menu > li > a {
    color: #d7e2e9;
  }
  .menucls .navbar-nav .open .dropdown-menu > li > a:hover, .menucls .navbar-nav .open .dropdown-menu > li > a:focus {
    color: #e5dbdb;
  }
  .menucls .navbar-nav .open .dropdown-menu > .active > a, .menucls .navbar-nav .open .dropdown-menu > .active > a:hover, .menucls .navbar-nav .open .dropdown-menu > .active > a:focus {
    color: #e5dbdb;
    background-color: #425766;
  }
}
</style>
</head>
<body>
<div class="container">
<h3>Mobile navbar demo</h3>
<nav class="navbar menucls">
  <div class="container-fluid">
    <!�For better mobile display-->
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <a class="navbar-brand" href="#">Web</a>
    </div>

    <!-- Collect the nav links, forms, and other content for toggling -->
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
      <ul class="nav navbar-nav">
        <li class="active"><a href="#">Home <span class="sr-only">(current)</span></a></li>
        <li><a href="https://www.jquery-az.com/php-tutorials/">PHP</a></li>
        <li><a href="https://www.jquery-az.com/jquery-tips/">jQuery</a></li>
        <li class="dropdown">
          <a href="https://www.jquery-az.com/bootstrap-tips-tutorials/" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Bootstrap <span class="caret"></span></a>
          <ul class="dropdown-menu">
            <li><a href="https://www.jquery-az.com/bootstrap-carousel-5-single-multiple-horizontal-and-vertical-sliding-demos/">Carousel</a></li>
            <li><a href="https://www.jquery-az.com/bootstrap-form-customized-styles-6-online-examples/">Forms</a></li>
            <li role="separator" class="divider"></li>
            <li><a href="https://www.jquery-az.com/bootstrap-select-5-beautiful-styles/">Select</a></li>
          </ul>
        </li>
      </ul>



      <form class="navbar-form navbar-left" role="search">
        <div class="form-group">
          <input type="email" class="form-control inputstl" id="Email2" placeholder="Email here">
        </div>
        <button type="submit" class="btn btn-info">Subscribe</button>
      </form>
    </div><!-- /.navbar-collapse -->
  </div><!-- /.container-fluid -->
</nav>
</div>
</body>
</html>