carousel.php

  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
  <style>.carousel-indicators{
    margin-left: -2%;
  }
 .container{
   width:900px;
 }  
 .carousel-control{
   background-image:none !important;
 }
 .glyphicon-chevron-right:before{
   background-color: black;
   background-blend-mode: black;
 }
 .glyphicon-chevron-left:before{
   background-color: black;
   background-blend-mode: black;
 }
 .carousel-indicators li{
   background-color:black;
 }
 .carousel-indicators .active{
   background-color:red;
 }
  </style>
<div class="container">
  <br>
  <div id="myCarousel" class="carousel slide" data-ride="carousel">
    <!-- Indicators -->
    <ol class="carousel-indicators">
      <li data-target="#myCarousel" data-slide-to="0" class="active"></li>
      <li data-target="#myCarousel" data-slide-to="1"></li>
      <li data-target="#myCarousel" data-slide-to="2"></li>
      <li data-target="#myCarousel" data-slide-to="3"></li>
    </ol>

    <!-- Wrapper for slides -->
    <div class="carousel-inner" role="listbox">

      <div class="item active">
        <img src="./images/IIIT-LOGO1.jpg"  width="900px" height="480px" >
        <div class="carousel-caption">
          <h3></h3>
          <p></p>
        </div>
      </div>

      <div class="item">
        <img src="./images/sh1a.jpeg"  width="900px" height="480px" >
        <div class="carousel-caption">
          <h3></h3>
          <p></p>
        </div>
      </div>
    
      <div class="item">
        <img src="./images/cr1a.jpeg"  width="900px" height="480px" >
        <div class="carousel-caption">
          <h3></h3>
          <p></p>
        </div>
      </div>

      <div class="item">
        <img src="./images/sarangaa.jpeg"  width="900px" height="480px" >
        <div class="carousel-caption">
          <h3></h3>
          <p></p>
        </div>
      </div>
  
    </div>

    <!-- Left and right controls -->
    <a class="left carousel-control" href="#myCarousel" role="button" data-slide="prev">
      <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
      <span class="sr-only">Previous</span>
    </a>
    <a class="right carousel-control" href="#myCarousel" role="button" data-slide="next">
      <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
      <span class="sr-only">Next</span>
    </a>
  </div>
</div>