The width=device-width part sets the width of the page to follow the screen-width of the device (which will vary depending on the device). The initial-scale=1 part sets the initial zoom level when the page is first loaded by the browser. 3. Containers. Bootstrap also requires a containing element to wrap site contents.
dirigente m, f (masculine and feminine plural dirigenti) 1  leading, ruling. 2  managerial, executive.
A reflection is a kind of transformation. It is basically a 'flip' of a shape over the line of reflection. Very often reflecions are performed using coordinate notation as they all are on this page. The coordinates allow us to easily describe the image and its preimage.