Help me improve my code :)

Question

Hey, I wrote this code for practicing. if you have some advices to improve it please let me know. In addition I want to add more scripts in this code but I don't know what. Thank you!!
https://code.sololearn.com/WeHO4iQ7Qu2Z

Answer 1

Please use Bootstrap and make your website responsive.
//The screen is for PC not Android.😐

Answer 2

You're not mandatory to use Bootstrap or any other framework, but @ArtemisAthena456 is right: you must improve your design to at least be good displayed on low sized device than other's (even if it's not totally 'responsive' ;)

Answer 3

I guess you should use tab than nav

Answer 4

if you ask improve then I think about performance
1.remove all quote out
2.remove <script> at line 47 out