Is this an error in my code or SoloLearn app?

I've made this program to calculate times table. In PC it works the way I want with all the 10 options being shown inside the select element as I set it's size to 10. But here on the app it shows a drop down menu! Did I do something wrong? Thank you guys! https://code.sololearn.com/Wr2oVLjT58Kk/?ref=app