超级炫酷的手机充电特效

效果如下：
html
HTML代码如下：

<div class="box"><div class="number">95.2%</div><div class="contrast"><span class="bubble"></span><span class="bubble"></span><span class="bubble"></span><span class="bubble"></span><span class="bubble"></span><span class="bubble"></span><span class="bubble"></span><span class="bubble"></span><span class="bubble"></span><span class="bubble"></span><span class="bubble"></span><span class="bubble"></span><span class="bubble"></span><span class="bubble"></span><span class="bubble"></span><span class="bubble"></span><span class="bubble"></span><div class="bubble-home"></div><div class="circle"></div></div></div>

css代码如下：

* {padding: 0;margin: 0;
}.box {width: 800px;height: 800px;background: #000;margin: 20px auto;padding-top: 20px;
}
.number{width: 200px;height: 200px;text-align: center;line-height: 200px;color:#fff;position: absolute;top:9%;left:50%;margin-left: -100px;z-index: 9;font-size: 30px;
}
.contrast {width: 100%;height: 100%;background: #000;position: relative;filter: contrast(15);animation: hueRotate 5s linear infinite;
}@keyframes hueRotate {0% {filter: contrast(15) hue-rotate(0);}100% {filter: contrast(15) hue-rotate(360deg);}
}.circle {width: 300px;height: 300px;position: absolute;left: 50%;top: 0;margin-left: -150px;filter: blur(8px);animation: cirleRotate 5s linear infinite;
}.circle::before {content: "";width: 200px;height: 200px;background: #00ff6f;position: absolute;top: 50%;left: 50%;transform: translate(-50%, -50%);border-radius: 42% 38% 62% 49% / 40%;
}.circle::after {content: "";width: 176px;height: 178px;background: #000;position: absolute;left: 50%;top: 50%;transform: translate(-50%, -50%);border-radius: 50%;}
@keyframes cirleRotate{0%{transform: rotate(0deg);}100%{transform: rotate(360deg);}
}
.bubble-home{width: 150px;height: 50px;background: #00FF6F;position: absolute;bottom: 0;left: 50%;margin-left: -75px;border-radius: 150px 150px 0 0;filter:blur(8px);
}
.bubble{width: 20px;height: 20px;background: #00FF6F;border-radius: 100%;position: absolute;left: 50%;bottom: 0;transform: translate(-50%,0);z-index: 100;animation: bubbleMoveUp  ease-in-out infinite;filter:blur(5px);
}
.bubble:nth-child(1){width: 20px;height: 20px;left: 50%;animation-duration: 5s;animation-delay: 1s;
}
.bubble:nth-child(2){width: 22px;height: 22px;left: 50%;animation-duration: 4s;animation-delay: 1.2s;
}.bubble:nth-child(3){width: 24px;height: 24px;left: 42%;animation-duration: 1.8s;animation-delay: 1.2s;
}.bubble:nth-child(4){width: 22px;height: 22px;left: 45%;animation-duration: 3.5s;animation-delay: 1.6s;
}.bubble:nth-child(5){width: 24px;height: 24px;left: 48%;animation-duration: 4.2s;animation-delay: 1.8s;
}.bubble:nth-child(6){width: 18px;height: 20px;left: 49%;animation-duration: 5.2s;animation-delay: 1.4s;
}.bubble:nth-child(7){width: 26px;height: 24px;left: 43%;animation-duration: 4.8s;animation-delay: 1.7s;
}.bubble:nth-child(8){width: 22px;height: 22px;left: 52%;animation-duration: 3.5s;animation-delay: 1.4s;
}.bubble:nth-child(9){width: 20px;height: 20px;left: 46%;animation-duration: 3.0s;animation-delay: 1.5s;
}.bubble:nth-child(10){width: 20px;height: 20px;left: 53%;animation-duration: 4.2s;animation-delay: 2.0s;
}.bubble:nth-child(11){width: 26px;height: 20px;left: 42%;animation-duration: 4.6s;animation-delay: 1.2s;
}.bubble:nth-child(12){width: 24px;height: 24px;left: 50%;animation-duration: 5.0s;animation-delay: 3.5s;
}
.bubble:nth-child(13){width: 22px;height: 22px;left: 50%;animation-duration: 4.2s;animation-delay: 4.0s;
}.bubble:nth-child(14){width: 24px;height: 22px;left: 42%;animation-duration: 3.5s;animation-delay: 3.6s;
}.bubble:nth-child(15){width: 20px;height: 20px;left: 45%;animation-duration: 5.2s;animation-delay: 3.7s;
}
.bubble:nth-child(16){width: 22px;height: 22px;left: 49%;animation-duration: 5.2s;animation-delay:1s;
}
.bubble:nth-child(17){width: 22px;height: 20px;left: 55%;animation-duration: 4.5s;animation-delay: 3.8s;
}
@keyframes bubbleMoveUp{0%{bottom: 0;}100%{bottom: calc(100% - 260px);}
}