Fixing sizing and position issues with Math.floor for dropdown

[KalebLenfest]

When testing this library, I found that removing the Math.floor would get the correct size of the parent component, whereas with it would end up short in many cases both for width and left specifically

[EmanuelDesarrollo]

I have to stick to a design where the dropdown list and container list need to be synchronized on the same border, I never found the solution with props. When researching in the library I discovered the same thing as @KalebLenfest, the Math.floor property affects the correctness of the elements, in the attached image you can see the difference.

Usually with Math.floor():

After the change, remove Math.floor():

Please accept the change sent by @KalebLenfest , thank you!