Having a website look the same on different browsers has been an ongoing issue for the web designers all over the world.
The reason is simple - the visualisation of a website depends on many different variables such as:
1. The visitor's OS
If your website uses submit buttons, radio buttons, check boxes and edit
fields, all of them will be visualized depending on the visitor's OS
and its style. For example, a submit button can look like a gray
rectangle on your Windows Classic theme, and like an oval if you use the
XP style. As a workaround, you can create custom buttons for your
The code of an ordinary submit button looks like this:
<input type = "submit">
You can replace it with the following code in order to specify the submit button image:
<button type="submit" name="submit" value="Submit"><img src="submitimg.gif"/>Submit</button>
Similar changes can be made for the other parts of your website's
interface. Consulting a professional web designer or searching the
Internet will be necessary to solve all of the possible issues.
2. Visitor's display resolution
Display resolution is affecting quite a lot the way a website is displayed. For example, if you create your pages at 1024x768 they will not fit into the screen of a visitor that has set his/her resolution to 800x600.
In order to fix this, you should not use static dimensions for your
website, i.e. instead of setting width = 1024px you can use width
= 100%. This will not fix all issues but at least will make the
page fit into the screen.
3. How the browser interprets the page
Web browsers do not render pages pixel by pixel. They read the entire code and produce an output depending on your code. There are, however, differences in the code interpretation. Therefore you should check the way your website looks on different browsers and operating systems. You can use the following online tool in order see how your pages look on different browsers:
Unfortunately, there is no easy solution for that. You should check the specificities of each browser that fails to display your website correctly and make the necessary adjustments to your code.
In conclusion, you should test your websites on as many different browsers and operating systems as possible. If you spot any errors, you should try searching the Internet for a specific solution for the issue.