Following are design flaws and constraints frequently encountered in page layout:
• Misalignment for foreground and background images
• Changing gutter sizes at the left edge of the browser
• Overlapping foreground images not allowed (although there are several tricks to get around this, such as using an image as a table cell background, using style sheets, or drawing them as a single image)
• Font size differences from system to system, machine to machine, and browser to browser
• Dynamic restructuring of pages not thoroughly tested