| <!DOCTYPE html> | |
| <!-- | |
| | Block-level boxes are boxes that participate in a block formatting context. | |
| | https://www.w3.org/TR/CSS21/visuren.html#block-boxes | |
| --> | |
| <html> | |
| <head> | |
| <style> | |
| .lighter-blue { | |
| background-color: #42a5f5; | |
| height: 100px; | |
| width: 100px; | |
| } | |
| .darker-blue { | |
| background-color: #2196f3; | |
| height: 100px; | |
| width: 100px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div class="lighter-blue"></div> | |
| <div class="darker-blue"></div> | |
| </body> | |
| </html> |