To accurately replicate a design and correctly position the scrollbar, follow these steps:
Understand the Design Layout: Before diving into the code, thoroughly understand the design. Look at the dimensions, placement, and style of different elements, including the scrollbar.
Choose the Right Tools: Depending on the platform, the tools may vary. Commonly used ones include CSS for styling web scrollbars, or UI libraries for applications.
Use CSS for Web Development:
To style scrollbars in a web project, you can use CSS properties. For instance, use ::-webkit-scrollbar for Chrome, Safari, and Edge to adjust the width and colors.
Example:
css
/ Width of the scrollbar /
::-webkit-scrollbar {
width: 12px;
}

/ Track /
::-webkit-scrollbar-track {
background: #f1f1f1;
}

/ Handle /
::-webkit-scrollbar-thumb {
background: #888;
}

/ Handle on hover /
::-webkit-scrollbar-thumb:hover {
background: #555;
}
Adjust HTML and CSS:
Ensure your HTML structure allows for scrolling. For vertical scrollbars, set a fixed height in the parent div/divs where overflow content will be handled.
Use CSS properties like overflow: auto or overflow-y: scroll to enable scrolling.
Cross-Browser Techniques:
Test your design across different browsers. Note that Firefox uses different properties (scrollbar-width and scrollbar-color) for scrollbar customization.
Example for Firefox:
css
/Firefox scrollbar width and color/
html {
scrollbar-width: thin;
scrollbar-color: blue yellow;
}
Consider JavaScript Customization:
For advanced designs, consider using JavaScript to manipulate scroll behaviors or appearance with more precision.
Libraries like PerfectScrollbar or even scrollbar-specific jQuery plugins can provide more control over styles and allow customized scrollbar positions.
Test Responsiveness:
Ensure your design works on different devices, especially if targeting mobile, by testing how the scrollbar behaves on smaller screens.
Seek Feedback and Iterate:
Once you’ve positioned the scrollbar, review the design, preferably getting feedback from peers or through user testing, and make any necessary adjustments to align with your design goals.

By following these steps, you should be able to accurately replicate the design and place the scrollbar where desired.