@charset "utf-8";
/* CSS Document */

.box{width: 680px; margin:40px auto; display: flex; flex-wrap: wrap;}

.season-box{width:330px; height:214px; border-radius:5px;
			display:block; margin:5px; background-size: 100%; background-repeat: none;
			opacity: .5; transition: opacity 2s;}

.season-box:hover {opacity: 1.0;}

.winter{background-image: url("images/winter.jpg");}
.spring{background-image: url("images/spring.jpg");}
.summer{background-image: url("images/summer.jpg");}
.fall{background-image: url("images/fall.jpg");}