The Crosshair Widget I just assigned the box with the middle anchors and adjust the alignment to x: 0.5 y:0.5 to make sure the cross hair stay at the middle on the screen. The resolution of canvas is 1920*1080 that fit with my screen size. Below is the widget hierarchy for my crosshair I just use a canvas that fit the screen size and use horizontal box to size with my image content then children my image in the box
