Trading with CFDs (Contracts for Difference) is possible through the use of leverage which allows you to purchase more units of your desired instrument than your available funds or initial deposit would allow you to. Leverage can also be viewed as how many times you can multiply your initial deposit or available funds to this instrument.
For example, if you have deposited 100 USD in your account and you wish to trade with an instrument with leverage of 1:10, you can open a position of up to 100 * 10 = 1000 USD in value.
You can check the leverage ratio for the traded instrument from its information tab, as the various instrument types have a different leverage ratios.
*The leveraged amount is not subject to payback, and the generated profit is entirely 100% yours as we don't apply any commission on it.