很多看了油条演示站的这个，比较喜欢，今天就抽空做了以下。

第一步：

parts文件下search.php 倒数第三个</div>前添加以下代码

<div class="awaves">
		        <svg class="waves" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 24 150 28" preserveAspectRatio="none" shape-rendering="auto">
		            <defs>
		                <path id="gentle-wave" d="M-160 44c30 0 58-18 88-18s 58 18 88 18 58-18 88-18 58 18 88 18 v44h-352z"></path>
		            </defs>
		            <g class="parallax">
		                <use xlink:href="#gentle-wave" x="48" y="0" fill="rgba(255,255,255,0.7"></use>
		                <use xlink:href="#gentle-wave" x="48" y="3" fill="rgba(255,255,255,0.5)"></use>
		                <use xlink:href="#gentle-wave" x="48" y="5" fill="rgba(255,255,255,0.3)"></use>
		                <use xlink:href="#gentle-wave" x="48" y="7" fill="#fff"></use>
		            </g>
		        </svg>
		    </div>

第二步：

添加CSS

.awaves {
    background: linear-gradient(60deg, rgb(252, 185, 62) 0%, rgb(255, 111, 132) 100%);
    padding-top: 320px;
    z-index: -1;
    position: absolute;
    bottom: 0;
    width: 100%;
}

.waves {
    position: relative;
    width: 100%;
    height: 10vh;
    margin-bottom: -6px;
    min-height: 100px;
    max-height: 150px;
}
.parallax>use {
    animation: move-forever 25s cubic-bezier(.55, .5, .45, .5) infinite;
}
.parallax>use:nth-child(1) {
    animation-delay: -2s;
    animation-duration: 7s;
}
.parallax>use:nth-child(2) {
    animation-delay: -3s;
    animation-duration: 10s;
}
.parallax>use:nth-child(3) {
    animation-delay: -4s;
    animation-duration: 13s;
}
.parallax>use:nth-child(4) {
    animation-delay: -5s;
    animation-duration: 20s;
}
@keyframes move-forever {
    0% {
        transform: translate3d(-90px, 0, 0);
    }
    100% {
        transform: translate3d(85px, 0, 0);
    }
}