JSFiddle - React, Tailwind, and code Playground

HTML

<!doctype html>
<html>

<head>
    <meta charset="utf-8">
    <title>Northman | Insurance for the Wild</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
    <link rel="stylesheet" href="css/career.css">
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>
    <script src="https://code.jquery.com/jquery-3.1.1.slim.min.js" integrity="sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">

</head>

<body>
    <div class="header">

        <nav class="navbar navbar-toggleable-md navbar-light bg-faded">
            <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>


            <div class="collapse navbar-collapse" id="navbarSupportedContent">
                <ul class="navbar-nav mr-auto">
                    <li class="nav-item-insurance">
                        <a class="nav-link" href="#">About </a>
                    </li>
              ...

CSS

html,
body {
    border: 0;
    margin: 0;
    height: 100%;
    min-height: 100%;
}


/**************Nav Bar Start **************/

.bg-faded {
    background-color: #1072B8;
}

.navbar-light .navbar-nav .nav-link {
    color: white !important;
}

.nav-item-insurance {
    color: white !important;
    margin-left: 20px;
    padding-top: 2px;
    font-size: 0.875em;
}

.nav-item-ourstory {
    color: white !important;
    margin-left: 20px;
    padding-top: 2px;
    font-size: 0.875em;
}

.nav-item-login-signup {
    font-size: 0.875em;
    color: white !important;
    margin-left: 20px;
    padding-top:
}

.nav-item-getcovered {
    border-color: #EF7440;
    margin-left: 10px;
    border-style: solid;
    color: white;
    padding-left: 4px;
    padding-bottom: 2.5px;
    padding-right: 4px;
    font-size: 0.750em;
    padding-top: 4.5px;
    letter-spacing: .30em;
    font-family: Adelle PE;
}

@media screen and (max-width: 991px) {
    .nav-item {
        font-family: AvantGarde;
        letter-spacing: .30em;
        color: white !important;
        margin-left: 80px;
    }
    .nav-item-getcovered {
        border-style: solid;
        border-width: 5px;
        padding-left: 40px;
        padding-right: 40px;
        width: 195px;
        border-color: #EF7440;
        margin-left: 70px;
    }
}


/**************Nav Bar Finish **************/

.container {
    width: 100% !important;
}

.col-lg-6 {
    height: 850px;
}

.sections a {
    text-decoration: none;
    position: relative;
    display: inline-block;
    color: #EF7440;
    font-family: "AvantGarde";
    font-size: 2.625em;
    font-weight: bold;
    letter-spacing: .24em;
}

.sections a:after {
    content: "";
    height: 5px;
    width: 50%;
    background-color: #EF7440;
    position: absolute;
    bottom: -.7em;
    left: 50%;
    transform: translate(-50%);
}

#insurance {
    display: flex;
    align-items: center;
    background-size: 100% 100%;
    justify-content: center;
   ...