Nplaum footer nrog ruaj navbar

Pin ib footer rau hauv qab ntawm qhov chaw saib hauv desktop browsers nrog qhov kev cai HTML thiab CSS. Ib tug ruaj navbar tau ntxiv nrog padding-top: 60px;rau ntawm main > .container.

Rov qab mus rau lub neej ntawd nplaum footer rho tawm navbar.