What is the correct posture for cycling?

Good day! I'm curious about the best posture to maintain while cycling. Could you please elaborate on what the ideal cycling posture entails? Specifically, I'm interested in knowing how to position my arms, back, and legs for optimal performance and comfort. Is there a certain angle that the handlebars should be adjusted to? And how can I ensure that my posture is not causing any undue strain or injury? I'm looking to enhance my cycling experience, and I believe proper posture plays a crucial role. Thank you in advance for your guidance.