It seems like your question covers a lot of ground, but I'll try to give you a high-level overview of how to approach your project.
It looks like you're utilizing bootstrap for styling, which is great for ensuring compatibility across different screen sizes.
Your code structure could benefit from some tidying up, as it appears a bit scattered. When organizing your divs, start with the larger grid first.
For example:
<div class="col-xs-12 col-md-6 col-sm-12 col-lg-6">
should be rearranged as
<div class="col-lg-6 col-md-6 col-sm-12 col-xs-12> // in hierarchical order
First address this issue.
Furthermore, maintain a mentality based on grids. Within a grid, subdivide into smaller grids as if crafting a full page so that everything aligns seamlessly, just like with your parent grids (in an ideal scenario!).
A potential pitfall of grids arises when one box contains more text than another, causing misaligned heights. To counteract this, assign fixed heights to your boxes or ensure uniform text lengths. For larger screens, adjust these heights using @media queries.
This simplifies the concept of 'responsive websites'.
When it comes to CSS:
.my-fixed-height-box-01 {
height: 3em; // customize to suit your design
}
@media only screen and (max-width:600px) {
.my-fixed-height-box-01 {
height: 4em; // customize to suit your design
}
}
@media only screen and (max-width:480px) {
.my-fixed-height-box-01 {
height: 6em; // customize to suit your design
}
}
Bootstrap includes design components for images that automatically adjusts their responsiveness.
Maintain clean and organized code that serves as a solid foundation for future development. If you encounter specific challenges along the way, don't hesitate to turn to platforms like Stackoverflow for assistance.