<nav class="navbar navbar-expand-lg navbar-light fixed-top">
  <div class="container">
    <a class="navbar-brand" href="#">Mouri</a>
    <button class="navbar-toggler" 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 ml-auto">
        <li class="nav-item active">
          <a class="nav-link" href="#">Home</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">About</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Portfolio</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Services</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Contact</a>
        </li>
      </ul>
    </div>
  </div>
</nav>

<div id="carouselExampleIndicators" class="carousel slide" data-ride="carousel">
  <ol class="carousel-indicators">
    <li data-target="#carouselExampleIndicators" data-slide-to="0" class="active"></li>
    <li data-target="#carouselExampleIndicators" data-slide-to="1"></li>
    <li data-target="#carouselExampleIndicators" data-slide-to="2"></li>
  </ol>
  <div class="carousel-inner">
    <div class="carousel-item active">
      <img class="d-block w-100" src="https://i.postimg.cc/bNQp0RDW/1.jpg" alt="First slide">
      <div class="carousel-caption d-none d-md-block">
        <h5>Slider One Item</h5>
        <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Maxime, nulla, tempore. Deserunt excepturi quas vero.</p>
      </div>
    </div>
    <div class="carousel-item">
      <img class="d-block w-100" src="https://i.postimg.cc/pVzg3LWn/2.jpg" alt="Second slide">
      <div class="carousel-caption d-none d-md-block">
        <h5>Slider One Item</h5>
        <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Maxime, nulla, tempore. Deserunt excepturi quas vero.</p>
      </div>
    </div>
    <div class="carousel-item">
      <img class="d-block w-100" src="https://i.postimg.cc/0y2F6Gpp/3.jpg" alt="Third slide">
      <div class="carousel-caption d-none d-md-block">
        <h5>Slider One Item</h5>
        <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Maxime, nulla, tempore. Deserunt excepturi quas vero.</p>
      </div>
    </div>
  </div>
  <a class="carousel-control-prev" href="#carouselExampleIndicators" role="button" data-slide="prev">
    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
    <span class="sr-only">Previous</span>
  </a>
  <a class="carousel-control-next" href="#carouselExampleIndicators" role="button" data-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="sr-only">Next</span>
  </a>
</div>





<!--- ignore the code below-->

<div class="link-area">
  <a href="https://www.youtube.com/channel/UCki4IDK86E6_pDtptmsslow" target="_blank">Click for More</a>
</div>
.carousel-item {
  height: 100vh;
  min-height: 300px;
  background: no-repeat center center scroll;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}
.carousel-caption {
  bottom: 270px;
}

.carousel-caption h5 {
  font-size: 45px;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-top: 25px;
}

.carousel-caption p {
  width: 75%;
  margin: auto;
  font-size: 18px;
  line-height: 1.9;
}

.navbar-light .navbar-brand {
  color: #fff;
  font-size: 25px;
  text-transform: uppercase;
  font-weight: bold;
  letter-spacing: 2px;
}

.navbar-light .navbar-nav .active > .nav-link, .navbar-light .navbar-nav .nav-link.active, .navbar-light .navbar-nav .nav-link.show, .navbar-light .navbar-nav .show > .nav-link {
  color: #fff;
}

.navbar-light .navbar-nav .nav-link {
  color: #fff;
}

.navbar-toggler {
  background: #fff;
}

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

.nav-link {
  padding: .2rem 1rem;
}

.nav-link.active,.nav-link:focus{
  color: #fff;
}

.navbar-toggler {
  padding: 1px 5px;
  font-size: 18px;
  line-height: 0.3;
}

.navbar-light .navbar-nav .nav-link:focus, .navbar-light .navbar-nav .nav-link:hover {
  color: #fff;
}






/* ignore the code below */


.link-area
{
  position:fixed;
  bottom:20px;
  left:20px;  
  padding:15px;
  border-radius:40px;
  background:tomato;
}
.link-area a
{
  text-decoration:none;
  color:#fff;
  font-size:25px;
}

External CSS

  1. https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css

External JavaScript

  1. https://code.jquery.com/jquery-3.3.1.slim.min.js
  2. https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js