What are the potential issues with adjusting menu height based on main container height in PHP?

Adjusting menu height based on main container height in PHP can lead to inconsistent and unpredictable results, especially if the main container's height is dynamic or changes frequently. To solve this issue, it is recommended to use CSS for adjusting menu height based on main container height, as it provides more flexibility and control over the layout.

// Instead of adjusting menu height based on main container height in PHP,
// use CSS to set the menu height based on the main container height.

// Example CSS:
// .main-container {
//     height: 500px;
// }
// .menu {
//     height: 100%;
// }