上から #3a5976 と下から #2c4762
読みづらくてすみません、テキストエディタにコピーしてください
<html>
<head>
<style>
body {
background-image: linear-gradient(bottom, rgb(70,125,149) 19%,
rgb(98,163,179) 60%,
rgb(56,122,122) 80%);
background-image: -o-linear-gradient(bottom, rgb(70,125,149) 19%,
rgb(98,163,179) 60%,
rgb(56,122,122) 80%);
background-image: -moz-linear-gradient(bottom, rgb(70,125,149) 19%,
rgb(98,163,179) 60%,
rgb(56,122,122) 80%);
background-image: -webkit-linear-gradient(bottom, rgb(70,125,149) 19%,
rgb(98,163,179) 60%,
rgb(56,122,122) 80%);
background-image: -ms-linear-gradient(bottom, rgb(70,125,149) 19%,
rgb(98,163,179) 60%,
rgb(56,122,122) 80%);
}
</style>
</head>
<body>
</body>