Never confuse It with It's
A). Its - is a possessive determiner. (Possessive Pronoun)
Meaning - belonging to or associated with a thing previously mentioned or easily identified.
e.g - Turn the camera on its side.
B). It's - short form for either it is or it has.(Contraction)
e.g - 1). It's my fault. 2). It's been a hot day.
If you have trouble keeping them straight, try remembering this phrase:
Use its like his ; use it's like he's.
1). His tact impressed us. --- He's tactful.
2). Its beauty pleased us. --- It's beautiful.