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.
This page is about the quasiparticle. Exciton is also the title of a single by IDM composer Squarepusher. An exciton is a bound state of an electron and an imaginary particle called an electron hole in an insulator or semiconductor, and such is a Coulomb-correlated electron-hole pair.It is an elementary excitation, or a quasiparticle of a solid.n exciton is a bound state of an electron and an imaginary particle called an electron hole in an insulator or semiconductor, and such is a Coulomb-correlated electron-hole pair.