<body>
  <section id="title">
    <div class="container-fluid">
      <nav class="navbar navbar-expand-lg navbar-dark">
        <a class="navbar-brand" href="">TinDog</a>
        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo01" aria-controls="navbarTogglerDemo01" aria-expanded="false" aria-label="Toggle navigation">
          <span class="navbar-toggler-icon"></span>
        </button>
        <div class="collapse navbar-collapse" id="navbarTogglerDemo01">
          <ul class="navbar-nav ml-auto">
            <li class="nav-item"></li>
            <a class="nav-link" href="">Contact</a>
            <li class="nav-item"></li>
            <a class="nav-link" href="">pricing</a>
            <li class="nav-item"></li>
            <a class="nav-link" href="">Download</a>
          </ul>
        </div>
      </nav>
      <!-- Title -->
      <div class="row">
        <div class="col-lg-6  col-md-12">
          <h1>Meet new and interesting dogs nearby.</h1>
          <button type="button">Download</button>
          <button type="button">Download</button>
        </div>
        <div class="col-lg-6  col-md-12">
          <img src="images/iphone6.png" alt="iphone-mockup">
        </div>
      </div>
    </div>
  </section>
--------css--------------------------------------------
#title{
  background-color:#ff4c68;
}
h1{
font-family: 'Montserrat', sans-serif;
font-size: 3rem;
line-height: 1.5;
}
.container-fluid{
padding:200px;
}
padding is not working in bootstrap v 4.5 in fluid containers all style sheets are linked properly but why padding is not getting applied? also if i write padding left or right still it do not work?