<div class="bg1"> </div>
<div class="bgr11"> </div>
    

.bg1 {
  width: 200px;
  height: 750px;
  background: green;
  margin-left: 10px;
  margin-top: 10px;
}
.bgr11 {
  width: 700px;
  height: 150px;
  background: red;
  position: fixed;
  top: 0;
}