Spirit Airlines Boarding Zones system to make the boarding process more organized and efficient. Each passenger is assigned a boarding zone, which is printed on their boarding pass. Zone 1 is for priority passengers, such as those with Big Front Seats or upgrades like Fast Track Boarding. Zone 2 is typically for passengers who’ve purchased Bundle It packages. Zones 3 to 5 are for regular passengers, with Zone 5 boarding last. This system helps reduce gate congestion and ensures enough space in the overhead bins. By knowing your zone, you can plan when to head to the gate and avoid unnecessary stress during boarding.

The most important principles of web design include:

<ol class="decimal" style="margin: 1em 1em 1em 2em; padding: 0px; border: 0px; font-size: 12px; font-family: Arial, Helvetica, Verdana, sans-serif; vertical-align: baseline; list-style: none; color: #111111;">
<li style="margin: 0px; padding: 0px; border: 0px; font-family: inherit; vertical-align: baseline; list-style: outside decimal;"><strong style="margin: 0px; padding: 0px; border: 0px; font-family: inherit; vertical-align: baseline; font-weight: bold;">User-Centered Design &ndash; Focus on usability and intuitive navigation.</li>
<li style="margin: 0px; padding: 0px; border: 0px; font-family: inherit; vertical-align: baseline; list-style: outside decimal;"><strong style="margin: 0px; padding: 0px; border: 0px; font-family: inherit; vertical-align: baseline; font-weight: bold;">Visual Hierarchy &ndash; Organize content to guide user attention effectively.</li>
<li style="margin: 0px; padding: 0px; border: 0px; font-family: inherit; vertical-align: baseline; list-style: outside decimal;"><strong style="margin: 0px; padding: 0px; border: 0px; font-family: inherit; vertical-align: baseline; font-weight: bold;">Responsive Design &ndash; Ensure compatibility across all devices and screen sizes.</li>
<li style="margin: 0px; padding: 0px; border: 0px; font-family: inherit; vertical-align: baseline; list-style: outside decimal;"><strong style="margin: 0px; padding: 0px; border: 0px; font-family: inherit; vertical-align: baseline; font-weight: bold;">Consistency &ndash; Maintain uniform styles and elements throughout the site.</li>
<li style="margin: 0px; padding: 0px; border: 0px; font-family: inherit; vertical-align: baseline; list-style: outside decimal;"><strong style="margin: 0px; padding: 0px; border: 0px; font-family: inherit; vertical-align: baseline; font-weight: bold;">Accessibility &ndash; Design for all users, including those with disabilities.</li>
<li style="margin: 0px; padding: 0px; border: 0px; font-family: inherit; vertical-align: baseline; list-style: outside decimal;"><strong style="margin: 0px; padding: 0px; border: 0px; font-family: inherit; vertical-align: baseline; font-weight: bold;">Fast Load Times &ndash; Optimize performance for better user experience.</li>
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<br style="color: #111111; font-family: Arial, Helvetica, Verdana, sans-serif; font-size: 12px;" />These principles ensure a functional, attractive, and user-friendly website.