I want to erase this white border line.
I've tried several times.
And I knew it wasn't a border.
But I have no idea how to fix it.
It is a text type of input tag.
It is a background setting of 100% width and height.
However, the rest of the white parts are formed.
Take a picture of the code and upload it to make it easier to see.
I asked the school teacher, but only the insincere answer came back.
This is English that feels like a Korean using a translator.