How to hide the hamburger menu icon in phone

Hi, I need to hide the “hamburger icon” in the phones or tablets, I need it to look like in the computer, because I am using the menu to show items, and I need it to be with text, like everything after you press the hamburger icon, but without the hamburger icon, to start in the second level of the menu, like it would be in the computer.

Please help me with a css code or something.

Here I attach some screenshots, because I am working in localhost for now:

1) This is how it looks in the computer screen: https://imgur.com/g9knhFi

2) This is how it looks in the phone / tablet screen: https://imgur.com/MjUNvfA

3) I would like it to look like this without the hamburger icon, looking like a “computer screen” menu in the visuals. Without the hamburger icon to open it: https://imgur.com/2VJFCFO

I hope you guys can help me with this thing, might not be too hard, and probably will be helpful for a lot of people looking for something like this.
Thanks guys!