horizontally
US /ˌhɔːr.ɪˈzɑːn.t̬əl.i/
UK /ˌhɔːr.ɪˈzɑːn.t̬əl.i/

1.
horizontalmente
in a horizontal direction or position; flat or level with the ground
:
•
The artist painted the landscape horizontally.
El artista pintó el paisaje horizontalmente.
•
Lay the planks horizontally across the gap.
Coloca las tablas horizontalmente a través del hueco.