Liquidation
Leverage makes a small move in the price a large move in your result. If the price moves against you far enough to use up your whole collateral, the position closes on its own. That point is the liquidation price, and you see it before you open.
Reading the depth bar
Every open position shows how much of its collateral is still there.
How far the price can move
Before liquidation, from the price you opened at:
1x−100%
2x−50%
3x−33.3%
5x−20%
10x−10%
A long falls toward its liquidation price; a short rises toward it.
What happens
The position closes at the liquidation price. Your collateral goes to that market's pool, and 1% of it is the fee. Nothing else in your balance is touched.
How to stay clear
Use less leverage, open with more collateral, or close early. The depth bar and the load mark on the chart show how close you are at any moment.