@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"); }