/*
    <div class="ripple-background" >
        <div class="bgc_circle bgc_xxlarge bgc_shade1" > </div >
        <div class="bgc_circle bgc_xlarge bgc_shade2" > </div >
        <div class="bgc_circle bgc_large bgc_shade3" > </div >
        <div class="bgc_circle bgc_mediun bgc_shade4" > </div >
        <div class="bgc_circle bgc_small bgc_shade5" > </div >
    </div >
*/

.bgc_circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(50, 50, 50, 0.5);
    animation: ripple 30s infinite;
    box-shadow: 0px 0px 1px 0px #508fb9;
}

.bgc_small {
    width: 200px;
    height: 200px;
    left: -100px;
    bottom: -100px;
}

.bgc_medium {
    width: 400px;
    height: 400px;
    right: -200px;
    top: -200px;
}

.bgc_large {
    width: 600px;
    height: 600px;
    right: -300px;
    top: -300px;
}

.bgc_xlarge {
    width: 800px;
    height: 800px;
    right: -400px;
    top: -400px;
}

.bgc_xxlarge {
    width: 1000px;
    height: 1000px;
    right: -500px;
    top: -500px;
}

.bgc_shade1 {
    opacity: 0.2;
}

.bgc_shade2 {
    opacity: 0.5;
}

.bgc_shade3 {
    opacity: 0.7;
}

.bgc_shade4 {
    opacity: 0.8;
}

.bgc_shade5 {
    opacity: 0.9;
}

@keyframes ripple {
    0% {
        transform: scale(0.8);
    }

    50% {
        transform: scale(1.2);
    }

    100% {
        transform: scale(0.8);
    }
}