Responsive division

[MARCELO]

I was building something and between two pairs of text+picture, i decided to make a division using this keyboard key: _  . So i had something like this:

__________________________________________________________________________________________________________________________

 

But in the smartphone, i had this:

_____________________________

_____________________________
______________________________

 

which is not something i wanted to, Is there a way i can present one single line anywhere (laptop, smartphone, etc)?

 

Thanks.