@media (max-width:767px){#bg{background-image: url(../module/picture/BG-1.png); background-repeat: no-repeat; background-position: right; width: 100vw; height: 100vh; background-size: cover;}}@media (min-width:768px){#bg{background-image: url(../module/picture/BG.png); background-repeat: no-repeat; background-position: center; width: 100vw; height: 100vh; background-size: cover;}}