見本はこちら
http://jsdo.it/Yukimi.Sato/rBvF
HTML
<a class="btn gradation-sky" href="#">ボタン</a>
CSS
.gradation-sky { color: #FFFFFF; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.15); background-color: #0099ff; background-image: -moz-linear-gradient(top, #52b9ff, #0099ff); background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#52b9ff), to(#0099ff)); background-image: -webkit-linear-gradient(top, #52b9ff, #0099ff); background-image: -o-linear-gradient(top, #52b9ff, #0099ff); background-image: linear-gradient(to bottom, #52b9ff, #0099ff); background-repeat: repeat-x; filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff52b9ff', endColorstr='#ff0099ff', GradientType=0); border-color: #3aaffe #188fee #007aea; *background-color: #0099ff; *border: 1px solid #007aea; box-shadow: 0 1px 1px 0 rgba(0, 0, 0, 0.10); } .gradation-sky:hover{ color: #FFFFFF; background-color: #0099ff; }