What elements make up lipids?

All lipids contain carbon hydrogen and oxygen. Some of them also contain nitrogen and phosphorus.
The four main classes of lipids are fats waxes sterols and phospholipids.
Fats
Fats are triglycerides. They are triesters formed by the reaction of glycerol and any of several fatty acids.
Fats may be either solid or liquid at room temperature depending on their structure and composition. Fats that are liquids at normal room temperature are usually called oils. Fats that are solids at normal room temperature are usually called fats.
Waxes
Waxes are organic that usually consist of long hydrocarbon chains. Many natural waxes contain esters of long-chain carboxylic acids and long-chain alcohols.
Sterols
Sterols are derivatives of cholesterol. They all have the basic structure
Examples are cholesterol sitosterol and campesterol.
Fats waxes and sterols contain only carbon hydrogen and oxygen.
Phospholipids
Most phospholipids contain a diglyceride a phosphate group and a simple organic molecule such as choline. Thus they contain phosphorus and nitrogen.
A typical phospholipid is phosphatidylcholine.