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HTML 

              
                <div class="container-fluid">
  <nav class="navbar navbar-default">
    <div class="container">
      <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="#">Yet Another Bootstrap Portfolio</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 navbar-right">
          <li><a href="#about">About</a></li>
          <li><a href="#portfolio">Portfolio</a></li>
          <li><a href="#contact">Contact</a></li>
        </ul>
      </div><!-- /.navbar-collapse -->
    </div><!-- /.container-fluid -->
  </nav>

  <div class="col-xs-12 splashPage">
    <div class="splashPage-text">
      <p class="text-center main-line">Oh Snap!</p>
      <p class="text-center">It's a portfolio page made with Bootstrap!</p>
    </div>
  </div>
  <div class="col-xs-12 section" id="about">
    <div class="center-content">
      <h2>About Me</h2>
      <p>This would be the part where you write a little something about yourself. Don't be shy, let the world know what you're made of! A little embelishment is fine, just don't go overboard. Trust me, you don't want to oversell yourself as a "high-performance, challenge-seeking individual with the body to rival that of Adonis.</p>
      <img src="https://pbs.twimg.com/profile_images/1237550450/mstom_400x400.jpg" alt="A space where the portfolio owner's picture can go. Currently set to a picture of Tom Anderson, creator of MySpace" class="profile-image">
      <h3>I specialize in</h3>
      <div class="icon-container">
        <i class="devicon-html5-plain"></i>
        <i class="devicon-css3-plain"></i>
        <i class="devicon-javascript-plain"></i>
      </div>
    </div>
  </div>
  <div class="col-xs-12 section" id="portfolio">
    <div class="center-content">
      <h2>Portfolio</h2>
      <div class="project-container">
        <img src="https://gustavoguarino.com/projects/bootstrap-portfolio/paint-splatter.jpg" alt="Project screenshot. Placeholder courtesy of https://wallpaperset.com/">
        <p>A Study on Paint Splatter</p>
      </div>

      <div class="project-container">
        <img src="https://gustavoguarino.com/projects/bootstrap-portfolio/business-headphones.jpg" alt="Project screenshot. Placeholder courtesy of https://www.pexels.com">
        <p>Headphones Render</p>
      </div>

      <div class="project-container">
        <img src="https://gustavoguarino.com/projects/bootstrap-portfolio/architecture.jpg" alt="Project screenshot. Placeholder courtesy of https://www.pixelstalk.net/">
        <p>Architectual Design</p>
      </div>

      <div class="project-container">
        <img src="https://gustavoguarino.com/projects/bootstrap-portfolio/table.jpg" alt="Project screenshot. Placeholder courtesy of http://www.wallpapers4u.org/">
        <p>Shot of my Table, 2004</p>
      </div>
    </div>
  </div>
  <div class="col-xs-12 section" id="contact">
    <div class="center-content">
      <h2>Contact</h2>
      <p>Hoping for someone to reach out to you? Instead of simply dropping your email address somewhere in the text, why not have a form that can be filled out? It gives your page a nice touch, and if set up properly, can actually help keep your inbox neater.</p>
      <p>That being said, you will still want to have your email address typed out so that people can easily grab it for whatever they may need. Hopefully it's to reach out to  you, and not to scrape your information to send you spam. Either way, simply plonking that somewhere will do in a pinch, like so: <a href="mailto:yourname@youremailserver.com">yourname@youremailserver.com</a></p>
      <form>
        <div class="form-group row">
          <label for="first-name" class="sr-only">First Name</label>
          <input class="form-control" type="text" placeholder="First name" id="first-name">
        </div>
        <div class="form-group row">
          <label for="last-name" class="sr-only">Last Name</label>
          <input class="form-control" type="text" placeholder="Last name" id="last-name">
        </div>
        <div class="form-group row">
          <label for="email" class="sr-only">Email Address</label>
          <input class="form-control" type="text" placeholder="Email Address" id="email" required>
        </div>
        <div class="form-group row">
          <label for="message" class="sr-only">Your Message</label>
          <textarea class="form-control" placeholder="Your message" id="message" rows="7" required></textarea>
        </div>
        <button type="submit" class="btn btn-primary">Send</button>
      </form>
    </div>
  </div>
  <footer>
    <a href="#"><i class="fa fa-facebook" aria-hidden="true"></i></a>
    <a href="#"><i class="fa fa-twitter" aria-hidden="true"></i></a>
    <a href="#"><i class="fa fa-linkedin" aria-hidden="true"></i></a>
  </footer>
</div>
!

CSS 

              
                h2 {
    display: block;
    text-align: center;
    width: 60%;
    margin: 0.3em auto;
    padding-bottom: 0.25em;
    border-bottom: 3px dashed #ff9f1c;
    font-family: "Passion One", sans-serif;
    font-size: 3.5em;
    color: #FDFFFC;
}
p {
    color: #011627;
    font-family: "Overpass", sans-serif;
    display: block;
    width: 90%;
    margin: 1em auto 2em;
    font-size: 1.35em;
    text-align: justify;
}
.container-fluid {
  padding: 0;
}
.navbar-default {
  margin-bottom: 0;
  background: #011627;
  border: none;
font-size: 1.3em;
}
.navbar-default .navbar-brand {
  color: whitesmoke !important;
  font-family: "Passion One", sans-serif;
}
.navbar-default li a {
  color: #ff9f1c !important;
  font-family: "Overpass", sans-serif;
}
.navbar-default li:hover {
  background: #c3e3fd;
}
.navbar-default li:hover a, footer a:hover i {
  background: #c3e3fd;
  color: #011627 !important;
}
.navbar-default .navbar-toggle {
  border-color: #ff9f1c;
  border-radius: 50%;
}
.navbar-default .navbar-toggle .icon-bar {
  background-color: #ff9f1c;
}
.fixed {
  position: fixed;
}
.splashPage {
  min-height: 450px;
  height: 70vh;
    max-height: 1080px;
  position: relative;
  background: #3e5358 url('http://wallpapercave.com/wp/0dWI3hG.jpg') no-repeat fixed center center !important;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}
.splashPage-text {
  display: block;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  min-height: 190px;
  height: 20vh;
  width: 100%;
  min-width: 400px;
  font-family: "Passion One", sans-serif;
}
.splashPage-text .main-line {
  margin: 0;
  color: white;
  font-size: 8em;
  text-shadow: 0 4px 1px #503c28;
}
.splashPage-text p {
    font-family: "Passion One", sans-serif;
    margin: 0;
    color: lightgray;
    font-size: 3em;
    text-shadow: 0 2px 2px #46321e;
    width: 100%;
}
.section {
  padding: 20px 0;
  min-height: 700px;
}
.section:nth-child(odd) {
    background: #2ec4b6;
}
.section:nth-child(even) {
    background: #626868;
}
h3 {
    display: block;
    text-align: center;
    width: 60%;
    padding-bottom: 0.25em;
    font-family: "Passion One", sans-serif;
    color: #FDFFFC;
    font-size: 2.5em;
    margin: 1em auto 0.45em;
}
.profile-image {
  display: block;
  margin: 0 auto;
  border-radius: 100%;
  width: 200px;
}
.icon-container {
  position: relative;
  width: 100%;
  height: 100px;
  text-align: center;
}
.icon-container i {
  position: relative;
  font-size: 100px;
  margin: 0 20px;
  color: #ff9f1c;
  opacity: 0;
}
.icon-container i:hover {
  color: #ffca82;
}
.slideIn {
  animation-name: slideIn;
  animation-duration: .8s;
  animation-fill-mode: forwards;
}
@keyframes slideIn {
  from {
    bottom: -100;
    opacity: 0;
  }
  to {
    bottom: 0;
    opacity: 1;
  }
}
.project-container {
  position: relative;
  margin: 0 auto 30px;
  background: #ff9f1c;
}
.project-container img {
  max-height: 100%;
  max-width: 100%;
  height: auto;
  width: auto;
  margin: 0 auto;
  display: block;
}
.project-container p {
  pointer-events: none;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
  font-size: 3em;
  text-align: center;
  font-family: "Overpass", sans-serif;
  display: none;
}
.project-container:hover img {
  opacity: .5;
  transition: opacity .25s;
}
.project-container:hover p {
  display: block;
}
form {
    border-radius: 15px;
    background: #626868;
    padding: 20px;
    width: 450px;
    margin: 1.5em auto;
}
form .form-group {
  margin: 0;
  margin-bottom: 0.75em;
}
form input {
  border: none;
}
form textarea {
  resize: none;
}
footer {
  background: #011627;
  width: 100%;
  padding-right: 50px;
  text-align: right;
}
footer i {
  color: #ff9f1c;
  padding: 10px 20px;
  font-size: 25px !important;
}
.center-content {
  max-width: 900px;
  margin: 0 auto;
}
!

JS 

              
                $( document ).ready(function() {
  $(window).scroll(function() {
    var scroll = $(window).scrollTop();
    var triggerPoint = $(".icon-container").position();

    if (scroll >= triggerPoint.top - 200) {
      $("i").addClass("slideIn");
    }
  });
});
!
999px

Console