HTML CODE: <! DOCTYPE html > < html > < head > < meta charset = "utf-8" > < meta name = "viewport" content = "width=device-width, initial-scale=1" > < title > Toggle </ title > < link rel = "stylesheet" href = "Toggle.css" > </ head > < body > < input type = "checkbox" id = "day-night" >< label for = "day-night" ></ label > < div class = "content" > < div class = "moon-sun" ></ div > < div class = "cuboid floor one" > < div class = "side" ></ div > < div class = "side" ></ div > < div class = "side" ></ div > < div class = "side" ></ div > < div class = "side" ></ div > ...