This is my code, HTML and body has body class,and then inside them a div has a background image and inside that a div has color overlay and at last there is a login form inside them. I have scrolling in my page, how can I remove it and have a page without scrolling.It is important for me that be correct in all media size.

```css
.bg-image{
  background: url("../images/666664.jpg") ;
  height: 100%;
  position: relative;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.body{
  height: 100%;
  margin: 0;
  font: 400 15px/1.8 "Lato", sans-serif;
  color: white!important;
}

.color-overlay {
  position: relative;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #0d235b;
  opacity: 0.6;
}
```

```html
<html  class="body">
  <head>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
  </head>

  <body class="body">
    <div class="bg-image">
      <div class="color-overlay"></div>

      <div class="container">
        <div class="row">
        <form class="login form_height col-xs-12 ">
            <div class="form-group row">
             <label for="staticEmail" class="col-sm-3 col-form-label">Username</label>
              <div class="col-sm-9">
                <input placeholder="Username" type="text" class="form-control" id="staticEmail">
              </div>
            </div>
            <div class="form-group row">
              <label for="inputPassword" class="col-sm-3 col-form-label">Password</label>
              <div class="col-sm-9">
                <input type="password" class="form-control" id="inputPassword" placeholder="Password">
              </div>
            </div>
            <div class="form-group row">
              <label for="sub_btn" class="col-sm-3 col-form-label" ></label>
              <div class="col-sm-9">
                <input type="submit" class="btn login_btn btn-default btn_sub " value="Login" id="sub_btn" >
              </div>
            </div>
          </form>

        </div>
      </div>
    </div>

    <footer class="col-xs-12 no-padd"></footer>

    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
  </body>
</html>
```