Adjust your desk so that the keyboard is at a position that your arms are straight down from the shoulders and roughly right angle elbow when your wrists are ra

Adjust your desk so that the keyboard is at a position that your arms are straight down from the shoulders and roughly right angle elbow when your wrists are raised from the desk. If that means that you need to adjust the height upwards, get a flat foot rest so that your hips and knees are also at roughly right angles. Have the top of your screen just above eye level so that most of the time you are looking straight on.