メモ。
background-image: -webkit-linear-gradient(rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 1) 100%); background-image: -moz-linear-gradient(rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 1) 100%); background-image: -ms-linear-gradient(rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 1) 100%); background-image: -o-linear-gradient(rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 1) 100%);