Hi everyone

I need a simple help to design my autocomplete div from a input text file, i have this code but the width and height are not working.

I want to create a css file and write some css to design my autocomplete box but i dont know how i can do it.

I have this code:

PHP Code:
$(function() {
availableTags = [
"#Search" ).autocomplete({
width:  400,
If anyone can give me a help with that will be really great for me, thanks community