Currently, the issue I am encountering involves an ASP.NET website with a header, sidebar, and additional right sidebar. When I resize the browser window, the left sidebar overlaps the content page, resulting in mixed-up controls. Please refer to the image for a better understanding.
Furthermore, there is a problem when I run the website on a wide screen resolution as the controls (panels) have a larger margin, making everything appear wider.
Any suggestions on how to resolve this issue would be greatly appreciated. Thank you in advance.
EDIT:
CSS code for the side panel (right):
#droite
{
position: fixed;
top: 22.5em;
right: 5%;
width: 13%;
background-color: White;
}