Why isn't this thing working?

Question

https://code.sololearn.com/W3Z7Z31b53sz/?ref=app
After Valentin Hacker told me why am I getting those errors I solved them in the first part,now I want a button to hide the main page and go to the 2nd page but it isn't working can somebody tell y?

Answer 1

line 9 have extra space in getElementById("main_page ").style.....

Answer 2

*super mega ultra-sonic epic facepalm mode activated*

Answer 3

good collab moment, nicely done Burey

Answer 4

how exactly two players mode will work?

Answer 5

duh
silly me xD

seriously tho
on same phone?
they would both see what the other is drawing

or are you planning some online mechanics for us?

Answer 6

*Epic Face Palm Moment*

Answer 7

oh noes......
i broke _Retr0/-...........
😭😭😭

Answer 8

*realizes his mistake, is speechless and is questioning his own existence*

Answer 9

Will need 2 players to play the game instead of AI