@media only screen and (max-width: 900px) { 

	.highline input {
		width: 25vw;
		height: 3vw;
	}
	
	.highline input[type='submit'] {
		width: 27.5vw;
		height: 5vw;
	}

	#class_box {
		width: 55vw;
		height: 220px;
	}

	.date {
		font-size: 2.5vw;
		margin: 10px;
	}
	
	.class_box_title {
		font-size: 3.5vw;
		margin: 10px;
	}
	
	.class_box_description_line {
		font-size: 2.6vw;
		margin: 10px;
	}

	.shadow_01 {
		top:30vw;
		width: 35vw;
		height: 10vw;
					/* left, up, blur, spread, color */
		box-shadow: 0px 0px 80px 100px #00000000;
		-webkit-box-shadow: 0px -20px 50px 40px #000000bc;
	}

	#unify_avatar img {
		width: 16vw;
		left: 50vw;
		top: 4vw;
	}
}