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CSS

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HTML 

              
                <body id="main" data-spy="scroll" data-target=".navbar-collapse" data-offset="50">
<nav class="navbar navbar-default navbar-fixed-top">
    <div class="container">
        <div class="navbar-header">
            <button type="button" class="navbar-toggle" data-toggle="collapse"
                    data-target="#myNavbar">
                <span class="glyphicon glyphicon-menu-hamburger"></span>

            </button>

        </div>
        <div class="collapse navbar-collapse text-center" id="myNavbar">
            <ul class="nav navbar-nav">
                <li><a href="#about">ABOUT</a></li>
                <li><a href="#portfolio">PORTFOLIO</a></li>
                <li><a href="#contact">CONTACT</a></li>
            </ul>
        </div>
    </div>
</nav>

<div class="jumbotron text-center">
    <h1>Jimmy Höglund</h1>
    <hr>
    <p class="landing-par">Studying computer science in Borlänge, Sweden.</p>
    <!--<a href="#about" title="Scroll down">
        <span class="glyphicon glyphicon-chevron-down"></span></a>-->
    <br>
    <a href="#about" class="jumbotronBtn btn">Read more</a>
</div>


<div class="container-fluid" id="about">
    <div class="container">
        <div class="row">
            <div class="col-md-8 col-xs-12">
                <h2 class="text-center">about me</h2>
                <hr>
                <p> Hello, my name is Jimmy Höglund and I'm studying computer science (systemvetenskap in swedish) at
                    Högskolan Dalarna in Borlänge. The program involves a lot of coding in Java, JavaScript, HTML, PHP,
                    SQL
                    etc. I have a big interest in computer hardware and new technology and have
                    built a handful of custom-built computers. On my free time I like to hang out with friends and play
                    video-games with them.</p>
                <br>
            </div>
            <div class="col-md-4">
                <img class="img-responsive img-circle slideanim hideImage"
                        src="https://i.gyazo.com/b405d75939b924e34182bbe88d3d1032.png"
                        alt="Picture of me" align="right">
            </div>
        </div>
    </div>
    <br>

    <div class="container">
        <div class="row">
            <div class="col-md-4">
                <img src="https://makdigitaldesign.com/services/wp-content/uploads/2014/03/responsive-design1.png"
                        class="slideanim hideImage img-responsive devices">
            </div>

            <div class="col-md-8 col-xs-12">
                <h2 class="text-center">about the website</h2>
                <hr>
                <p>Lately I've found a big interest in designing and developing modern and responsive websites. A friend
                    recommended the <a href="https://www.freecodecamp.com" target="_blank"
                            title="https://www.freecodecamp.com">Free
                        Code Camp</a>
                    course to me and I've been working
                    throught that in order to learn as much as I can. The course involves HTML5, Bootstrap, jQuery,
                    JavaScript etc. and this portfolio website is one step of the course. This will pretty much be my
                    first,
                    somewhat, professional-looking website and I would appreciate it if you could send me some feedback
                    and
                    pointers
                    on how I can improve it! </p>
            </div>
        </div>
    </div>
</div>

<div class="container-fluid bg-grey text-center" style="margin-right: 0; padding-right: 0;" id="portfolio">
    <h2 class="text-center">Portfolio</h2>
    <hr>
    <div class="row" align="center">

        <div class="col-md-3 col-sm-6 col-xs-12">
            <a href="https://codepen.io/ColtoN899/full/GjgYEm/" target="_blank">
                <div class="hovereffect">

                    <img class="img-responsive portfolioImg"
                            src="https://i.gyazo.com/870a33aad56b45a5f3616fe10ce33849.png">


                    <div class="overlay">
                        <h2>Random quote widget</h2>

                        <p>Go to website</p>
                    </div>
                </div>
            </a>
        </div>


        <div class="col-md-3 col-sm-6 col-xs-12">
            <a href="https://codepen.io/ColtoN899/full/zKxQLO/" target="_blank">
                <div class="hovereffect">
                    <img class="img-responsive portfolioImg"
                            src="https://gyazo.com/f66964cea4f93978e5ee84cad67cff88.png">

                    <div class="overlay">
                        <h2>Local weather widget</h2>

                        <p>Go to website</p>
                    </div>
                </div>
            </a>
        </div>


        <div class="col-md-3 col-sm-6 col-xs-12">
          <a href="https://codepen.io/ColtoN899/full/NRGZkN/" target="_blank">
            <div class="hovereffect">
                <img class="img-responsive portfolioImg"
                        src="https://i.gyazo.com/57c817847cbc1d7528dc48c2faa68429.png">

                <div class="overlay">
                    <h2>Wikipedia viewer</h2>

                    <p>Go to website</p>
                </div>
            </div>
          </a>
        </div>


        <div class="col-md-3 col-sm-6 col-xs-12">
            <div class="hovereffect">
                <img class="img-responsive portfolioImg"
                        src="https://readytheme.net/wp-content/uploads/2015/12/ee2.png">

                <div class="overlay">
                    <h2></h2>

                    <p>PLACEHOLDER IMAGE</p>
                </div>
            </div>
        </div>


        <div class="col-md-3 col-sm-6 col-xs-12">
            <div class="hovereffect">
                <img class="img-responsive portfolioImg"
                        src="https://images.template.net/wp-content/uploads/2016/02/09115958/One-Page-Bootstrap-Responsive-HTML5-Mobile-Template.jpg">

                <div class="overlay">
                    <h2></h2>

                    <p>PLACEHOLDER IMAGE</p>
                </div>
            </div>
        </div>


        <div class="col-md-3 col-sm-6 col-xs-12">
            <div class="hovereffect">
                <img class="img-responsive portfolioImg"
                        src=" http://blog.creative-tim.com/wp-content/uploads/2015/02/15-Gorgeous-Sites-Built-with-Twitter-Bootstrap-730x410.jpg">

                <div class="overlay">
                    <h2></h2>

                    <p>PLACEHOLDER IMAGE</p>
                </div>
            </div>
        </div>


        <div class="col-md-3 col-sm-6 col-xs-12">
            <div class="hovereffect">
                <img class="img-responsive portfolioImg"
                        src="http://materialdesignblog.com/wp-content/uploads/2015/01/lifeawesome.png">

                <div class="overlay">
                    <h2></h2>

                    <p>PLACEHOLDER IMAGE</p>
                </div>
            </div>
        </div>


        <div class="col-md-3 col-sm-6 col-xs-12">
            <div class="hovereffect">
                <img class="img-responsive portfolioImg"
                        src="https://templateflip.com/wp-content/uploads/2015/12/one-page-bootstrap-600x338.jpg">

                <div class="overlay">
                    <h2></h2>

                    <p>PLACEHOLDER IMAGE</p>
                </div>
            </div>
        </div>
    </div>
</div>

<div class="container-fluid" id="contact">

    <h2 class="text-center">contact</h2>
    <hr>

    <div class="container contactContainer">
        <form id="contactForm">
            <div class="form-group">
                <label for="name" class="">Name</label>
                <input type="text" class="form-control" id="name" placeholder="First & Last">
            </div>

            <div class="form-group">
                <label for="email">Email</label>
                <input type="email" class="form-control" id="email" placeholder="example@domain.com">
            </div>

            <div class="form-group">
                <label for="message">Message</label>
                <textarea placeholder="Enter text..." rows="4" class="form-control" id="message"
                        form="contactForm"></textarea>
            </div>

            <div class="form-group">
                <button type="submit" class="btn contactBtn"><span class="glyphicon glyphicon-send"
                        style="font-size: 12px"></span> Send
                </button>
            </div>

        </form>
    </div>
</div>

<footer class="container-fluid" id="footer">
    <div class="col-md-12 footerDiv col-xs-12 text-center">
        <a href="https://www.facebook.com/jimmy.hoglund.10?ref=bookmarks" target="_blank"><i
                class="fa fa-facebook-square" aria-hidden="true"></i></a>
        <a href="https://www.youtube.com/channel/UC8ugLoDqtRalo7qi9wTojVQ" target="_blank"><i
                class="fa fa-youtube-square" aria-hidden="true"></i></a>
        <a href="https://www.linkedin.com/in/jimmy-h%C3%B6glund-245141125?trk=hp-identity-name" target="_blank"><i
                class="fa fa-linkedin-square" aria-hidden="true"></i></a>
        <a href="https://plus.google.com/u/0/116121539635506159640/posts" target="_blank"><i
                class="fa fa-google-plus-square" aria-hidden="true"></i></a>

        <p class="text-center copyright">© 2016, Jimmy Höglund, All rights reserved</p>
    </div>
</footer>

</body>
!

CSS 

              
                @import url('https://fonts.googleapis.com/css?family=Open+Sans');
@import url('https://fonts.googleapis.com/css?family=Pacifico');
@import url('https://fonts.googleapis.com/css?family=Lato');

@media only screen and (max-width: 1000px) {
    .img-circle, .devices {
        display: none;
    }
}

html, body {
    height: 100%;
    font-family: 'Open Sans', sans-serif !important;
}

.navbar {
    border: 0;
    z-index: 9999;
    letter-spacing: 4px;
    text-shadow: 1px 1px 1px #000;
}

.navbar-brand {
    letter-spacing: 1px;
    color: #FFFFFF !important;
}

.navbar li a, .navbar {
    color: #fff !important;
    font-size: 12px;
    transition: all 0.6s 0s;
}

.navbar-toggle {
    background-color: transparent !important;
    border: 0;
}

.navbar-nav li a:hover, .navbar-nav li.active a {
    background-color: #DD4E40 !important;
}

/* This will be active when the scrollTop == 0 */
.navbar-invis {
    background-color: rgba(0, 0, 0, 0);
}

/* This will be active when the scrollTop != 0 */
.navbar-moved {
    background-color: #242B35;
    -webkit-box-shadow: 0px 1px 5px 0px #000;
    -moz-box-shadow: 0px 1px 5px 0px #000;
    box-shadow: 0px 1px 5px 0px #000;
}

.container-fluid {
    padding: 35px !important;
}

.contactBtn {
    background-color: #DD4E40;
    color: #FFFFFF;
    transition: all 0.3s ease 0s;
}

.contactBtn:hover {
    color: #FFFFFF;
    background-color: #E62117;
}

.navbar .navbar-nav {
    display: inline-block;
    float: none;
    vertical-align: top;
}

.navbar .navbar-collapse {
    text-align: center;
}

/* Hamburger menu button */
.glyphicon-menu-hamburger {
    font-size: 22px;
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 10px;
    padding-top: 12px;
    color: #FFFFFF;
}

.devices {
    text-align: right;
    margin-top: 60px;
    width: 80%;
}

/* Hides the image at first to get a better looking slide-in effect */
.hideImage {
    visibility: hidden;
}

hr {
    border: 0;
    width: 50px;
    height: 2px;
    background-color: #DD4E40;
}

.jumbotron hr {
    width: 30%;
    min-width: 185px;
    max-width: 300px;
    margin-top: -10px;
}

h1 {
    text-shadow: 1px 2px 3px #000;
    margin-top: 15%;
}

.jumbotron p {
    font-size: 22px;
    text-shadow: 1px 1px 1px #000;
    font-family: 'Lato', sans-serif;
}

.jumbotronBtn {
    background-color: transparent;
    font-family: 'Lato', sans-serif;
    font-size: 21px;
    color: #ffffff !important;
    border-radius: 50px;
    border: 2px solid #DD4E40;
    text-shadow: 1px 1px 1px #000;
    transition: all 0.3s ease 0s;
}

.jumbotronBtn:hover {
    background-color: #DD4E40;
}

#footer {
    background-color: #242B35;
    background-size: cover;
    margin-top: 100px;
    padding: 35px !important;
    -webkit-box-shadow: inset 0px 10px 20px -9px rgba(0, 0, 0, 0.75);
    -moz-box-shadow: inset 0px 10px 20px -9px rgba(0, 0, 0, 0.75);
    box-shadow: inset 0px 10px 20px -9px rgba(0, 0, 0, 0.75);
    color: #FFFFFF;
}

#footer a {
    color: #FFFFFF;
    font-size: 15px;
}

.copyright {
    padding-top: 10px;
    font-size: 12px;
    color: #FFFFFF;
}

.fa {
    font-size: 40px !important;
    margin-left: 15px;
    transition: all 1s ease 0s;
}

.fa-facebook-square:hover {
    color: #3B5998;
}

.fa-youtube-square:hover {
    color: #E62117;
}

.fa-linkedin-square:hover {
    color: #1E87BE;
}

.fa-google-plus-square:hover {
    color: #DD4E40;
}

.jumbotron {
    background: url("https://static.pexels.com/photos/7109/laptop-notebook-clean-hero-large.jpg");
    background-size: cover;
    background-repeat: no-repeat;
    opacity: 1;
    height: 100%;
    min-height: 600px;
    color: #ffffff;

}

.img-circle {
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    max-width: 200px;
    margin-top: 25px;
    border: 3px solid #242B35;
}

h2, h1 {
    font-family: 'Pacifico', cursive;
}

.overlay h2 {
    font-family: 'Open Sans', sans-serif;
}

p {
    font-size: 18px;
}

a {
    color: #205493;
    font-weight: bold;
}

a:hover, a:active a:visited {
    color: #DD4E40;
    text-decoration: none !important;
}

.bg-grey {
    background-color: rgb(242, 242, 242);
}

.col-xs-12 {
    padding: 3px;
}

.col-md-3 {
    padding: 10px;
}

.portfolioImg {
    height: 230px;
}

label {
    font-size: 15px;
    margin-top: 5px;
    margin-left: 3px;
}

/* Hover effect on portfolio images */

.hovereffect {
    width: 100%;
    height: 100%;
    float: left;
    overflow: hidden;
    position: relative;
    text-align: center;
    cursor: default;
    background-color: #242B35;
}

.hovereffect .overlay {
    width: 100%;
    height: 100%;
    position: absolute;
    overflow: hidden;
    top: 0;
    left: 0;
    padding: 25px 20px;
    cursor: pointer;
}

.hovereffect img {
    display: block;
    position: relative;
    max-width: none;
    width: calc(100% + 20px);
    -webkit-transition: opacity 0.35s, -webkit-transform 0.35s;
    transition: opacity 0.35s, transform 0.35s;
    -webkit-transform: translate3d(-10px, 0, 0);
    transform: translate3d(-10px, 0, 0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.hovereffect:hover img {
    opacity: 0.4;
    filter: alpha(opacity=40);
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
}

.hovereffect h2 {
    text-transform: uppercase;
    opacity: 0;
    color: #fff;
    text-align: center;
    position: relative;
    font-size: 17px;
    overflow: hidden;
    padding: 0.5em 0;
    background-color: transparent;
}

.hovereffect h2:after {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: #fff;
    content: '';
    -webkit-transition: -webkit-transform 0.35s;
    transition: transform 0.35s;
    -webkit-transform: translate3d(-100%, 0, 0);
    transform: translate3d(-100%, 0, 0);
}

.hovereffect:hover h2:after {
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
}

.hovereffect a, .hovereffect p {
    color: #FFF;
    opacity: 0;
    filter: alpha(opacity=0);
    -webkit-transition: opacity 0.35s, -webkit-transform 0.35s;
    transition: opacity 0.35s, transform 0.35s;
    -webkit-transform: translate3d(100%, 0, 0);
    transform: translate3d(100%, 0, 0);
}

.hovereffect:hover a, .hovereffect:hover p, .hovereffect:hover h2 {
    opacity: 1;
    filter: alpha(opacity=100);
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
}
!

JS 

              
                /**
 * Created by hen_s on 2016-08-03.
 */

$(document).ready(function() {
    var scrollTop = $(window).scrollTop();
    var checkIfTop = (scrollTop == 0);
    var navbar = $('.navbar');
    var collapse = $('.collapse');

    //Navbar color on page load
    if (screen.width <= 600) {
        navbar.css('background-color', 'transparent');
        collapse.css("background-color", "#242B35");
        collapse.css("border-color", "transparent");
    } else if (screen.width > 600 && scrollTop > 0) {
        navbar.css('background-color', '#242B35');
        $('.navbar li a, .navbar').css('font-size', '15px');
    } else {
        navbar.css('background-color', 'transparent');
        $('.navbar li a, .navbar').css('font-size', '12px');
    }


    //Close collapse menu after click on small screens
    $(document).on('click', '.navbar-collapse.in', function(e) {
        if ($(e.target).is('a') && $(e.target).attr('class') != 'dropdown-toggle') {
            $(this).collapse('hide');
        }
    });


    //Slide animation images
    $(".slideanim").each(function() {
        var pos = $(this).offset().top;

        if (pos < scrollTop + 600) {
            $(this).removeClass("hideImage");
        } else {
            $(window).on('scroll', function() {
                $(".slideanim").each(function() {
                    var pos = $(this).offset().top;

                    if ((screen.height > 1000) && (pos < scrollTop + 800)) {
                        $(this).addClass("animated fadeInUp");
                        $(this).removeClass("hideImage");
                    } else if ((screen.height < 800) && (pos < scrollTop + 600)) {
                        $(this).addClass("animated fadeInUp");
                        $(this).removeClass("hideImage");
                    }
                });
            });
        } //end else
    });

    //Navbar slide function
    $(window).on('scroll', function() {
        scrollTop = $(window).scrollTop();

        if (scrollTop == 0 && screen.width > 600) {
            checkIfTop = true;
            navbar.css('background-color', 'transparent');
            $('.navbar li a, .navbar').css('font-size', '12px');

        } else if (scrollTop != 0 && screen.width > 600) {
            if (checkIfTop) {
                checkIfTop = false;
                navbar.css('background-color', '#242B35');
                $('.navbar li a, .navbar').css('font-size', '15px');
            }
        }
    });


    //Smooth scroll
    $(".navbar a, .jumbotron a, footer a").on('click', function(event) {
        if (this.hash !== "") {
            event.preventDefault();
            var hash = this.hash;

            $('html, body').animate({
                scrollTop: $(hash).offset().top
            }, 900, function() {
                window.location.hash = hash;
            });
        }
    });
});
!
999px

Console