@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: no-repeat;
	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");}