Result 水上で起こる波紋のようなエフェクトです css html, body {/*bodyの背景を波紋の色に合わせる*/ margin: 0; background: #45c2c5; } .ripple, .ripple:before, .ripple:after {/*疑似要素も作り、3つの波紋を作る*/ display: block; border-radius: 2px; width: 2px; height: 2px; animation: rip 6s infinite ease-out; } .ripple { position: absolute; z-index: -1; top: 40px; left: 15px; } .ripple:before, .ripple:after { content: ""; position: absolute; } .ripp