anchor.diff:      </div>
       <div class="col-sm">
         <div class="card">
  -        <img class="card-img-top" src="..." alt="Card image cap">
           <div class="card-body">
             <h5 class="card-title">Card title</h5>
             <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  
positive.code:     </div>
      <div class="col-sm">
        <div class="card">
          <img class="card-img-top" src="..." alt="Card image cap">
          <div class="card-body">
            <h5 class="card-title">Card title</h5>
            <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  
negative.code:   <div class="row">
      <div class="col-sm">
        <div class="card">
          <div class="card-body">
            <h5 class="card-title">Card title</h5>
            <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  