@media all and (max-width: 600px){
	.appear600{
		display: none;
	}
}

@media all and (min-width: 1700px){
	.hide600{
		display: none;
	}
}

@media all and (min-width: 601px) and (max-width: 1199px){
	.hide600{
		display: none;
	}
}

@media all and (min-width: 1200px) and (max-width: 1699px){
	.appear600{
		display: none;
	}
}

@media all and (min-width: 421px) and (max-width: 770px){
	.live-broadcast{
		width: 350px;
		height: 500px;
	}
}

@media all and (max-width: 420px){
	.live-broadcast{
		width: 270px;
		height: 460px;
	}
}