Why is my search box cut off?

I followed the embed install instructions, but my search box looks like it has been cut off. How can I fix this?

This problem is usually caused by not declaring a doctype (this affects the CSS Box Model in certain browsers, like Internet Explorer).

You can fix it by adding a doctype declaration to the top of your HTML page:

<!doctype html>

If that does not fix the problem, there is likely a CSS conflict.