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HTML

            
              <div class="pulse1"></div>
<div class="pulse2"></div>
<div class="icon"></div>
!

CSS

            
              body {
    overflow: hidden;
    background-color: DarkSeaGreen;
    background-image: 
    -webkit-linear-gradient(
    90deg, rgba(0,0,0,.1) 50%,
    transparent 25%, transparent 50%,  
    rgba(0,0,0,.1) 50%, rgba(0,0,0,.1) 90%, 
    transparent 75%, transparent);
    background-image: 
    -moz-linear-gradient(
    90deg, rgba(0,0,0,.1) 50%,
    transparent 25%, transparent 50%,  
    rgba(0,0,0,.1) 50%, rgba(0,0,0,.1) 90%, 
    transparent 75%, transparent);
    background-image:
    linear-gradient(
    90deg, rgba(0,0,0,.1) 50%,
    transparent 25%, transparent 50%,  
    rgba(0,0,0,.1) 50%, rgba(0,0,0,.1) 90%, 
    transparent 75%, transparent);
    background-size: 50px 50px;
}

.icon{
    position: absolute; 
    width: 180px;
    height: 180px;
    background: url(https://cdn1.iconfinder.com/data/icons/logotypes/32/circle-twitter-256.png) no-repeat;
    background-size: 180px 180px;
    margin: auto; 
    top: 0; left: 0; bottom: 0; right: 0;
    z-index: 3;
  
    -webkit-box-shadow: 
      0 0 0 10px   rgba(255,255,255,.2),
      0 0 25px 2px rgba(0,0,0,.4),
inset 0 0 0 15px   rgba(255,255,155,.4);
    -moz-box-shadow: 
      0 0 0 10px   rgba(255,255,255,.2),
      0 0 25px 2px rgba(0,0,0,.4),
inset 0 0 0 15px   rgba(255,255,155,.4);
    box-shadow: 
      0 0 0 10px   rgba(255,255,255,.2),
      0 0 25px 2px rgba(0,0,0,.4),
inset 0 0 0 15px   rgba(255,255,155,.4);
  
    -webkit-border-radius: 999px; 
    -moz-border-radius: 999px;
    border-radius: 999px;
    /* border-radius: 50% has issues on some mobile browsers */
}

.pulse1 {
    position: absolute;  
    width: 200px;
    height: 200px;
    margin: auto; 
    top: 0; left: 0; bottom: 0; right: 0;
    z-index: 1;
    opacity: 0;
    border: 3px solid rgba(255,255,255,.1);
  
    -webkit-animation: pulsejg1 4s linear infinite;
    -moz-animation: pulsejg1 4s linear infinite;
    animation: pulsejg1 4s linear infinite;
    -webkit-border-radius: 999px;
    -moz-border-radius: 999px;
    border-radius: 999px;
    -webkit-box-shadow: inset 0px 0px 15px 10px rgba(0, 0, 0, .6);
    -moz-box-shadow: inset 0px 0px 15px 10px rgba(0, 0, 0, .6);
    box-shadow: inset 0px 0px 15px 10px rgba(0, 0, 0, .6);
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}

.pulse2 {
    position: absolute;
    width: 200px;
    height: 200px;
    margin: auto; 
    top: 0; left: 0; bottom: 0; right: 0;
    z-index: 2;
    opacity: 0;
    border: 1px solid rgba(255,255,255,0);
  
    -webkit-animation: pulsejg2 4s linear infinite;
    -moz-animation: pulsejg2 4s linear infinite;
    animation: pulsejg2 4s linear infinite;
    -webkit-border-radius: 999px;
    -moz-border-radius: 999px;
    border-radius: 999px;
    -webkit-box-shadow: inset 0px 0px 12px 5px rgba(255, 255, 255, .8);
    -moz-box-shadow: inset 0px 0px 12px 5px rgba(255, 255, 255, .8);
    box-shadow: inset 0px 0px 12px 5px rgba(255, 255, 255, .8);
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}

@-webkit-keyframes pulsejg1 {
    0% {
        -webkit-transform: scale(.6);
        opacity: 0;
    }

    50% {
        -webkit-transform: scale(.6);
        opacity: 0;
    }

    60% {
        -webkit-transform: scale(.9);
        opacity: .2;
    }

    70% {
        -webkit-transform: scale(1.1);
        opacity: .35;
    }

    80% {
        -webkit-transform: scale(1.25);
        opacity: .2;
    }

    100% {
        -webkit-transform: scale(1.4);
        opacity: 0;
    }
}

@-moz-keyframes pulsejg1 {
    0% {
        -moz-transform: scale(.6);
        opacity: 0;
    }

    50% {
        -moz-transform: scale(.6);
        opacity: 0;
    }

    60% {
        -moz-transform: scale(.9);
        opacity: .2;
    }

    70% {
        -moz-transform: scale(1.1);
        opacity: .35;
    }

    80% {
        -moz-transform: scale(1.25);
        opacity: .2;
    }

    100% {
        -moz-transform: scale(1.4);
        opacity: 0;
    }
}

@keyframes pulsejg1 {
    0% {
        transform: scale(.6);
        opacity: 0;
    }

    50% {
        transform: scale(.6);
        opacity: 0;
    }

    60% {
        transform: scale(.9);
        opacity: .1;
    }

    70% {
        transform: scale(1.1);
        opacity: .25;
    }

    80% {
        transform: scale(1.25);
        opacity: .1;
    }

    100% {
        transform: scale(1.4);
        opacity: 0;
    }
}

@-webkit-keyframes pulsejg2 {
    0% {
        -webkit-transform: scale(.6);
        opacity: 0;
    }

    40% {
        -webkit-transform: scale(.8);
        opacity: .05;
    }

    50% {
        -webkit-transform: scale(1);
        opacity: .1;
    }

    60% {
        -webkit-transform: scale(1.1);
        opacity: .3;
    }

    80% {
        -webkit-transform: scale(1.2);
        opacity: .1;
    }

    100% {
        -webkit-transform: scale(1.3);
        opacity: 0;
    }
}

@-moz-keyframes pulsejg2 {
    0% {
        -moz-transform: scale(.6);
        opacity: 0;
    }

    40% {
        -moz-transform: scale(.8);
        opacity: .05;
    }

    50% {
        -moz-transform: scale(1);
        opacity: .1;
    }

    60% {
        -moz-transform: scale(1.1);
        opacity: .3;
    }

    80% {
        -moz-transform: scale(1.2);
        opacity: .1;
    }

    100% {
        -moz-transform: scale(1.3);
        opacity: 0;
    }
}

@keyframes pulsejg2 {
    0% {
        transform: scale(.6);
        opacity: 0;
    }

    40% {
        transform: scale(.8);
        opacity: .05;
    }

    50% {
        transform: scale(1);
        opacity: .1;
    }

    60% {
        transform: scale(1.1);
        opacity: .3;
    }

    80% {
        transform: scale(1.2);
        opacity: .1;
    }

    100% {
        transform: scale(1.3);
        opacity: 0;
    }
}
!

JS

            
              /* 
jaschagoltermann.com 

Sorry for all the outdated prefxes - they are for mobile browsers mostly.

Use any picture. Does not have to be round. 
Picture should have an aspect ratio of 1:1.

Variation of my other pen: 
Water Drop Circle Effect as CSS3 Animation 
*/
!
999px
🕑 One or more of the npm packages you are using needs to be built. You're the first person to ever need it! We're building it right now and your preview will start updating again when it's ready.
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