How to take a screenshot of Samsung s8?

S8 Screen capture mode: 1. Key screen capture: press and hold the power button and turn down the volume button at the same time to take a screen capture. 2. Quick icon screenshot: drop down the top screen menu-click the screenshot shortcut icon (if there is no icon, click the text below the screenshot icon-select screenshot). 3. Screen capture of floating menu: Settings-Auxiliary Functions-Agility and Interaction-Floating Menu-Sliding Switch, click on the dot on the screen and add four white box icons-slide down to the screen capture. 4. Palm Screen Capture: Settings-Advanced Functions-Palm Slide Screen Capture-Slide Switch; Use the edge of your palm to slide across the screen to capture the screen. Please keep the palm edge in contact with the screen when sliding.