Responsively Style Radio Buttons (HELP!)

Anyone got any idea why this wont work it keeps telling me that each of my div elements needs to have a closing tag which they do?

<link href="" rel="stylesheet" type="text/css">
  h2 {
    font-family: Lobster, Monospace;

  .thick-green-border {
    border-color: green;
    border-width: 10px;
    border-style: solid;
    border-radius: 50%;

<div class="container-fluid">
  <div class="row">
    <div class="col-xs-8">
      <h2 class="text-primary text-center">CatPhotoApp</h2>
    <div class="col-xs-4">
      <a href="#"><img class="img-responsive thick-green-border" src="" alt="A cute orange cat lying on its back. "></a>
  <img src="" class="img-responsive" alt="Three kittens running towards the camera. ">
    <div class="row">
    <div class="col-xs-4"><button class="btn btn-block btn-primary"><i class="fa fa-thumbs-up"></i> Like</button>
    <div class="col-xs-4"><button class="btn btn-block btn-info"><i class="fa fa-info-circle"></i> Info</button>
    <div class="col-xs-4"><button class="btn btn-block btn-danger"><i class="fa fa-trash"></i> Delete</button>
  <p>Things cats <span class="text-danger">love:</span></p>
    <li>cat nip</li>
    <li>laser pointers</li>
  <p>Top 3 things cats hate:</p>
    <li>flea treatment</li>
    <li>other cats</li>
    <div class="row">
  <form action="/submit-cat-photo">
    <div class="col-xs-6"> <label><input type="radio" name="indoor-outdoor"> Indoor</label></div>
    <div class="col-xs-6"> <label><input type="radio" name="indoor-outdoor"> Outdoor</label>
    <label><input type="checkbox" name="personality"> Loving</label></div>
    <label><input type="checkbox" name="personality"> Lazy</label>
    <label><input type="checkbox" name="personality"> Crazy</label>
    <input type="text" placeholder="cat photo URL" required>
    <button type="submit">Submit</button>    

You havent closed your main container-fluid div,
the closing tag for this line is on the line below
<div class="col-xs-6"> <label><input type="radio" name="indoor-outdoor"> Outdoor</label>
you havent closed the second div

<div class="row">

and your missing the closing div tag for the final “row” class
so ther should be 2 closing div tags after the Outdoor radio button and none on the checkboxes.