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純CSS Wave波浪效果，扁平產(chǎn)品介紹網(wǎng)頁常用
作者:admin 時(shí)間:2021-8-10 11:47:44 瀏覽:在前面文章中，介紹過飄動(dòng)的線條色帶（樂普線條畫布），本文繼續(xù)介紹另一款類似的效果，那就是CSS Wave 波浪效果，這效果在很多產(chǎn)品網(wǎng)頁上使用，它給人的視覺效果確實(shí)很好。
純 CSS Wave 波浪效果
簡要介紹
本實(shí)例實(shí)現(xiàn)的 Wave 波浪效果，無需用到圖片，僅用了CSS來實(shí)現(xiàn)動(dòng)畫效果，另外使用了SVG來畫圖。
使用SVG畫圖代替PNG圖片，是此實(shí)例值得推薦使用的原因，因?yàn)橄鄬τ谟肞NG圖片的實(shí)現(xiàn)方法，用SVG畫圖更具優(yōu)勢，它遷移起來非常方法，并且代碼也不多，代碼復(fù)制粘貼即可，無需另外轉(zhuǎn)移圖片。
完整HTML代碼
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>CSS Waves</title>
<style>
body {
margin:0;
}
h1 {
font-family: 'Lato', sans-serif;
font-weight:300;
letter-spacing: 2px;
font-size:48px;
}
p {
font-family: 'Lato', sans-serif;
letter-spacing: 1px;
font-size:14px;
color: #333333;
}
.header {
position:relative;
text-align:center;
background: linear-gradient(60deg, rgba(84,58,183,1) 0%, rgba(0,172,193,1) 100%);
color:white;
}
.logo {
width:50px;
fill:white;
padding-right:15px;
display:inline-block;
vertical-align: middle;
}
.inner-header {
height:65vh;
width:100%;
margin: 0;
padding: 0;
}
.flex { /*Flexbox for containers*/
display: flex;
justify-content: center;
align-items: center;
text-align: center;
}
.waves {
position:relative;
width: 100%;
height:15vh;
margin-bottom:-7px; /*Fix for safari gap*/
min-height:100px;
max-height:150px;
}
.content {
position:relative;
height:20vh;
text-align:center;
background-color: white;
}
/* Animation */
.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);
}
}
/*Shrinking for mobile*/
@media (max-width: 768px) {
.waves {
height:40px;
min-height:40px;
}
.content {
height:30vh;
}
h1 {
font-size:24px;
}
}
</style>
</head>
<body translate="no" >
<div class="header">
<!--Content before waves-->
<div class="inner-header flex">
<!--Just the logo.. Don't mind this-->
<svg version="1.1" class="logo" baseProfile="tiny" id="Layer_1" xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 500 500" xml:space="preserve">
<path fill="#FFFFFF" stroke="#000000" stroke-width="10" stroke-miterlimit="10" d="M57,283" />
<g><path fill="#fff"
d="M250.4,0.8C112.7,0.8,1,112.4,1,250.2c0,137.7,111.7,249.4,249.4,249.4c137.7,0,249.4-111.7,249.4-249.4
C499.8,112.4,388.1,0.8,250.4,0.8z M383.8,326.3c-62,0-101.4-14.1-117.6-46.3c-17.1-34.1-2.3-75.4,13.2-104.1
c-22.4,3-38.4,9.2-47.8,18.3c-11.2,10.9-13.6,26.7-16.3,45c-3.1,20.8-6.6,44.4-25.3,62.4c-19.8,19.1-51.6,26.9-100.2,24.6l1.8-39.7 c35.9,1.6,59.7-2.9,70.8-13.6c8.9-8.6,11.1-22.9,13.5-39.6c6.3-42,14.8-99.4,141.4-99.4h41L333,166c-12.6,16-45.4,68.2-31.2,96.2 c9.2,18.3,41.5,25.6,91.2,24.2l1.1,39.8C390.5,326.2,387.1,326.3,383.8,326.3z" />
</g>
</svg>
<h1>CSS Waves</h1>
</div>
<!--Waves Container-->
<div>
<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" />
</defs>
<g class="parallax">
<use xlink:href="#gentle-wave" x="48" y="0" fill="rgba(255,255,255,0.7" />
<use xlink:href="#gentle-wave" x="48" y="3" fill="rgba(255,255,255,0.5)" />
<use xlink:href="#gentle-wave" x="48" y="5" fill="rgba(255,255,255,0.3)" />
<use xlink:href="#gentle-wave" x="48" y="7" fill="#fff" />
</g>
</svg>
</div>
<!--Waves end-->
</div>
<!--Header ends-->
<!--Content starts-->
<div class="content flex">
<p>howtostagehomes.com | 2021</p>
</div>
<!--Content ends-->
</body>
</html>
代碼解釋
代碼上都有注釋，網(wǎng)頁布局代碼清晰。如wave波浪的實(shí)現(xiàn)代碼是這段SVG代碼：
<!--Waves Container-->
... ...
<!--Waves end-->
通過修改CSS .waves 類可以設(shè)置波浪的高度等屬性。
.waves {
position:relative;
width: 100%;
height:15vh;
margin-bottom:-7px; /*Fix for safari gap*/
min-height:100px;
max-height:150px;
}15vh 是指窗口高度的15%。
通過修改CSS .inner-header 類可以定位波浪的位置。
.inner-header {
height:65vh;
width:100%;
margin: 0;
padding: 0;
}65vh是指窗口高度的65%。
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