How to fully fit an image inside carousel(Bootstrap)

.carousel-inner>.item>img, .carousel-inner>.item>a>img {
        display: block;
        height: auto;
        max-width: 100%;
        line-height: 1;
        margin:auto;
        width: 100%; // Add this
        }

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<div class="carousel-inner">
  <div class="item active">
    <img src="Jellyfish.jpg" alt="image">
    <div class="carousel-caption">
      <h2>This is the heading</h2>
      <p>This is paragraph</p>
    </div>
  </div>
  <div class="item">
    <img src="Koala.jpg" alt="image">
    <div class="carousel-caption">
      <h2 style="color:orange">This is the heading</h2>
      <p>This is paragraph</p>
    </div>
  </div>
  <div class="item">
    <img src="Penguins.jpg" alt="image">
    <div class="carousel-caption">
      <h2>This is the heading</h2>
      <p>This is paragraph</p>
    </div>
  </div>
    <a href="#caro" class="left carousel-control" data-slide="prev">
      <span class="glyphicon glyphicon-chevron-left"></span>
    </a>
    <a href="#caro" class="right carousel-control" data-slide="next">
      <span class="glyphicon glyphicon-chevron-right"></span>
    </a>
</div>