I am playing with a simple HTML page using Bootstrap and I would love to have a way to visualize the columns, as in see them \"underneath\" the actual content as a different sha
Bootstrap 3 has different class names (span* > col-*-*), and uses padding to create the gutter (spacing) between columns so simply putting a background-color in the columns won't show the gutter.
For Bootstrap 3, you can add background-clip: content-box to only show the background color within the content area...
.row [class*='col-'] {
background-color: #ffeeee;
background-clip: content-box;
min-height: 20px;
}
http://codeply.com/go/pejyqLlrBF