The image is set as background of a div and repeat-y for 50 px.

CSS

In the real application, the image can be set as the backgound of body tag to build gradient backgound layout.

body {
  background: url(image/) repeat-y center;
  background-color: ;
  padding: 0;
  margin: 0
}
  
.content {
  width: ;
  margin: 0 auto;
}

Test the layout in another page