How clouds remain in the sky?

There exists an attraction between any two bodies in this universe which is known as force of gravitation. When a body is allowed to fall freely, the body will be attracted towards the earth due to the force of gravity. But we see clouds floating in the sky. Doesn't the earth's force of gravity affect the cloud?

Actually, it is not true to say that clouds always remain in the sky. Some type of clouds remain on the surface of earth such as fog. There are traces of water vapour in air. When air is cooled these traces of water vapour changes into small droplets of water. Cloud is the group of these droplets of water. Flowing air helps cloud to remain in the sky.

But due to air, cloud when goes higher than the surface of the earth it becomes more cold. Now the cloud which is becoming colder and colder the small water droplets come in contact and becomes a huge one. The flowing air can't withstand the cloud which is formed due to big droplets of water and due to force of gravity it falls on earth in the form of rain.