CSS3实现圆圈动态发光特效动画

CSS3实现圆圈动态发光特效动画

红色 圆圈 动态发光，二层光晕效果

白色 圆圈 动态发光，三层光晕效果

黄色 圆圈 动态发光，二层光晕效果

html:

    <!-- 红色 圆圈 动态发光，二层光晕效果 -->
    <div class="circle-wrap">
        <div class="circle">
            <div class="big-circle"></div>
            <div class="small-circle"></div>
        </div>
    </div>

    <!-- 白色 圆圈 动态发光，三层光晕效果 -->
    <div class="smallcircle2"></div>
    <div class="bigcircle2"></div>

    <!-- 黄色 圆圈 动态发光，二层光晕效果 -->
    <div class="item"></div>

css:

    <style>
        body{
            background: #006699;
        }
        .circle-wrap{
            position: absolute;
            top: 100px;
            left: 100px;
        }
        .circle{
            width: 24px;
            height: 24px;
            position: relative;
        }
        .big-circle{
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background: #ff0033;
            position: absolute;
            top: -6px;
            left: -6px;
            animation: twinkling 1s infinite ease-in-out;
            animation-fill-mode: both;
        }
        .small-circle{
            width: 12px;
            height: 12px;
            background: #ff0033;
            border-radius: 50%;
            position: absolute;
        }

        @keyframes twinkling {
            0%{
                opacity: 0.2;
                transform: scale(1);
            }
            50%{
                opacity: 0.5;
                transform: scale(1.12);
            }
            100%{
                opacity: 0.2;
                transform: scale(1);
            }
        }

        .smallcircle2{
            width: 12px;
            height: 12px;
            background-color: #fff;
            border-radius: 50%;
            position: absolute;
            top: 100px;
            left: 200px;
        }
        .smallcircle2::before{
            content: '';
            display: block;
            width: 12px;
            height: 12px;
            background-color: #fff;
            border-radius: 50%;
            opacity: 0.4;
            animation: scale 1s infinite cubic-bezier(0,0,0.49,1.02);
        }
        @keyframes scale {
            0%{
                transform: scale(1);
            }
            50%,75%{
                transform: scale(3);
            }
            78%,100%{
                opacity: 0;
            }
        }

        .bigcircle2{
            width: 12px;
            height: 12px;
            background-color: #fff;
            opacity: 0.4;
            border-radius: 50%;
            position: absolute;
            top: 100px;
            left: 200px;
            animation: scales 1s infinite cubic-bezier(0,0,0.49,1.02);
        }
        @keyframes scales {
            0%{
                transform: scale(1);
            }
            50%,75%{
                transform: scale(2);
            }
            78%,100%{
                opacity: 0;
            }
        }

        .item{
            width: 14px;
            height: 14px;
            background-color: #ffff00;
            border-radius: 50%;
            position: absolute;
            top: 150px;
            left: 100px;
        }
        .item::before{
            content: '';
            display: block;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            opacity: 0.7;
            background-color: #ffff00;
            animation: scaless 1s infinite cubic-bezier(0,0,0.49,1.02);
        }
        @keyframes scaless {
            0%{
                transform: scale(1);
            }
            50%,75%{
                transform: scale(3);
            }
            78%,100%{
                opacity: 0;
            }
        }
    </style>