CSS3是一個強大的前端開發技術,它可以幫助我們實作許多互動效果。其中,CSS3動畫可以為我們的網站增添生機和活力,并且非常易于使用和調整。
示例1:
<style type="text/css">
.animation {
width: 100%;
height: 100%;
background-color: #333;
position: absolute;
top:0;
left: 0;
display: flex;
justify-content: center;
align-items: center;
z-index: 1;
}
.circles {
width: 150px;
height: 150px;
position: relative;
}
.circle {
width: 30px;
height: 30px;
border-radius: 50%;
background-color: #fff;
position: absolute;
-webkit-animation: circling 1s infinite;
animation: circling 1s infinite;
}
.circle:nth-child(2) {
width: 20px;
height: 20px;
left: 55px;
top: 55px;
-webkit-animation-delay: 0.1s;
animation-delay: 0.1s;
}
.circle:nth-child(3) {
width: 40px;
height: 40px;
left: 35px;
top: 35px;
-webkit-animation-delay: 0.2s;
animation-delay: 0.2s;
}
@-webkit-keyframes circling {
0% {
-webkit-transform: scale(0);
transform: scale(0);
}
50% {
-webkit-transform: scale(1);
transform: scale(1);
opacity: 1.0;
}
100% {
-webkit-transform: scale(2);
transform: scale(2);
opacity: 0.0;
}
}
@keyframes circling {
0% {
-webkit-transform: scale(0);
transform: scale(0);
}
50% {
-webkit-transform: scale(1);
transform: scale(1);
opacity: 1.0;
}
100% {
-webkit-transform: scale(2);
transform: scale(2);
opacity: 0.0;
}
}
</style>
<div class="animation">
<div class="circles">
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
</div>
</div>
示例2
<style>
#loader {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 100px;
height: 100px;
}
.particle {
border-radius: 50%;
position: absolute;
background-color: #000;
opacity: 0;
animation: particle 1s linear infinite;
}
.particle:nth-child(1) {
width: 50px;
height: 50px;
top: 0;
left: 0;
animation-delay: 0s;
}
.particle:nth-child(2) {
width: 50px;
height: 50px;
top: 0;
right: 0;
animation-delay: 0.2s;
animation-duration: 1.2s;
}
.particle:nth-child(3) {
width: 50px;
height: 50px;
bottom: 0;
left: 0;
animation-delay: 0.4s;
animation-duration: 1.4s;
}
.particle:nth-child(4) {
width: 50px;
height: 50px;
bottom: 0;
right: 0;
animation-delay: 0.6s;
animation-duration: 1.6s;
}
@keyframes particle {
0% {
opacity: 1;
transform: scale(0);
}
100% {
opacity: 0;
transform: scale(1);
}
}
</style>
<div id="loader">
<div class="particle"> </div>
<div class="particle"> </div>
<div class="particle"> </div>
<div class="particle"> </div>
</div>
通過上面的代碼,我們建立出一個由4個粒子組成的加載動畫,每個粒子都有一個不同的動畫延遲時間和動畫持續時間。在這個示例中,粒子最初呈現為不透明,透明度從1到0,同時縮放從0到1,是以看起來像是從中心炸開的一些黑點。
希望本文能夠對您有所幫助,感謝您的閱讀!
人人為我,我為人人,謝謝您的浏覽,我們一起加油吧。