mini云码-wechatmini.com-用css实现透明气泡

                

.ball {
    display: inline-block;
    width: 100%;
    height: 100%;
    border-radius: 100%;
    position: relative;
    background: radial-gradient(circle at bottom, #81e8f6, #76deef 10%, #055194 80%, #062745 100%); }
.ball:before {
    content: "";
    position: absolute;
    top: 1%;
    left: 5%;
    width: 90%;
    height: 90%;
    border-radius: 100%;
    background: radial-gradient(circle at top, white, rgba(255, 255, 255, 0) 58%);
    -webkit-filter: blur(5px);
    filter: blur(5px);
    z-index: 2; }
.ball:after {
    content: "";
    position: absolute;
    display: none;
    top: 5%;
    left: 10%;
    width: 80%;
    height: 80%;
    border-radius: 100%;
    -webkit-filter: blur(1px);
    filter: blur(1px);
    z-index: 2;
    -webkit-transform: rotateZ(-30deg);
    transform: rotateZ(-30deg); }
.ball .shadow {
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.1) 40%, rgba(0, 0, 0, 0) 50%);
    -webkit-transform: rotateX(90deg) translateZ(-160px);
    transform: rotateX(90deg) translateZ(-160px);
    z-index: 1; }
.ball.plain {
    background: black; }
.ball.plain:before, .ball.plain:after {
    display: none; }
.ball.bubble {
    background: radial-gradient(circle at 50% 55%, rgba(240, 245, 255, 0.9), rgba(240, 245, 255, 0.9) 40%,
                    rgba(225, 238, 255, 0.8) 60%, rgba(43, 130, 255, 0.4));
    -webkit-animation: bubble-anim 2s ease-out infinite;
    animation: bubble-anim 2s ease-out infinite; }
.ball.bubble:before {
    -webkit-filter: blur(0);
    filter: blur(0);
    height: 80%;
    width: 40%;
    background: radial-gradient(circle at 130% 130%, rgba(255, 255, 255, 0) 0, rgba(255, 255, 255, 0) 46%,
      rgba(255, 255, 255, 0.8) 50%, rgba(255, 255, 255, 0.8) 58%,
       rgba(255, 255, 255, 0) 60%, rgba(255, 255, 255, 0) 100%);
    -webkit-transform: translateX(131%) translateY(58%) rotateZ(168deg) rotateX(10deg);
    transform: translateX(131%) translateY(58%) rotateZ(168deg) rotateX(10deg); }
.ball.bubble:after {
    display: block;
    background: radial-gradient(circle at 50% 80%, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0) 74%,
        white 80%, white 84%, rgba(255, 255, 255, 0) 100%); }

.ballbox {
    width: 200px;
    height: 200px;
    display: inline-block;
    margin: 20px;
}
                
            

html代码：

                
 <div class="ballbox">
    <div class="ball bubble"></div>
 </div>
                
            

                
@-webkit-keyframes bubble-anim {
    0% {
        -webkit-transform: scale(1);
        transform: scale(1); }

    20% {
        -webkit-transform: scaleY(0.95) scaleX(1.05);
        transform: scaleY(0.95) scaleX(1.05); }

    48% {
        -webkit-transform: scaleY(1.1) scaleX(0.9);
        transform: scaleY(1.1) scaleX(0.9); }

    68% {
        -webkit-transform: scaleY(0.98) scaleX(1.02);
        transform: scaleY(0.98) scaleX(1.02); }

    80% {
        -webkit-transform: scaleY(1.02) scaleX(0.98);
        transform: scaleY(1.02) scaleX(0.98); }

    97%, 100% {
        -webkit-transform: scale(1);
        transform: scale(1); }
}

@keyframes bubble-anim {
    0% {
        -webkit-transform: scale(1);
        transform: scale(1); }

    20% {
        -webkit-transform: scaleY(0.95) scaleX(1.05);
        transform: scaleY(0.95) scaleX(1.05); }

    48% {
        -webkit-transform: scaleY(1.1) scaleX(0.9);
        transform: scaleY(1.1) scaleX(0.9); }

    68% {
        -webkit-transform: scaleY(0.98) scaleX(1.02);
        transform: scaleY(0.98) scaleX(1.02); }

    80% {
        -webkit-transform: scaleY(1.02) scaleX(0.98);
        transform: scaleY(1.02) scaleX(0.98); }

    97%, 100% {
        -webkit-transform: scale(1);
        transform: scale(1); }
}