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

        opacity: 1;
    }
    45%
    {
        -webkit-transform: scale(.1);
                transform: scale(.1);

        opacity: .7;
    }
    80%
    {
        -webkit-transform: scale(1);
                transform: scale(1);

        opacity: 1;
    }
}

@-moz-keyframes scale
{
    0%
    {
        -moz-transform: scale(1);
             transform: scale(1);

        opacity: 1;
    }
    45%
    {
        -moz-transform: scale(.1);
             transform: scale(.1);

        opacity: .7;
    }
    80%
    {
        -moz-transform: scale(1);
             transform: scale(1);

        opacity: 1;
    }
}

@-o-keyframes scale
{
    0%
    {
        -o-transform: scale(1);
           transform: scale(1);

        opacity: 1;
    }
    45%
    {
        -o-transform: scale(.1);
           transform: scale(.1);

        opacity: .7;
    }
    80%
    {
        -o-transform: scale(1);
           transform: scale(1);

        opacity: 1;
    }
}

@keyframes scale
{
    0%
    {
        -webkit-transform: scale(1);
           -moz-transform: scale(1);
             -o-transform: scale(1);
                transform: scale(1);

        opacity: 1;
    }
    45%
    {
        -webkit-transform: scale(.1);
           -moz-transform: scale(.1);
             -o-transform: scale(.1);
                transform: scale(.1);

        opacity: .7;
    }
    80%
    {
        -webkit-transform: scale(1);
           -moz-transform: scale(1);
             -o-transform: scale(1);
                transform: scale(1);

        opacity: 1;
    }
}

.ball-pulse > div:nth-child(1)
{
    -webkit-animation: scale .75s -.24s infinite cubic-bezier(.2, .68, .18, 1.08);
       -moz-animation: scale .75s -.24s infinite cubic-bezier(.2, .68, .18, 1.08);
         -o-animation: scale .75s -.24s infinite cubic-bezier(.2, .68, .18, 1.08);
            animation: scale .75s -.24s infinite cubic-bezier(.2, .68, .18, 1.08);
}

.ball-pulse > div:nth-child(2)
{
    -webkit-animation: scale .75s -.12s infinite cubic-bezier(.2, .68, .18, 1.08);
       -moz-animation: scale .75s -.12s infinite cubic-bezier(.2, .68, .18, 1.08);
         -o-animation: scale .75s -.12s infinite cubic-bezier(.2, .68, .18, 1.08);
            animation: scale .75s -.12s infinite cubic-bezier(.2, .68, .18, 1.08);
}

.ball-pulse > div:nth-child(3)
{
    -webkit-animation: scale .75s 0s infinite cubic-bezier(.2, .68, .18, 1.08);
       -moz-animation: scale .75s 0s infinite cubic-bezier(.2, .68, .18, 1.08);
         -o-animation: scale .75s 0s infinite cubic-bezier(.2, .68, .18, 1.08);
            animation: scale .75s 0s infinite cubic-bezier(.2, .68, .18, 1.08);
}

.ball-pulse > div
{
    display: inline-block; 

    width: 15px;
    height: 15px;
    margin: 2px;

    border-radius: 100%;
    background-color: #55595c;

    -webkit-animation-fill-mode: both;
       -moz-animation-fill-mode: both;
         -o-animation-fill-mode: both;
            animation-fill-mode: both;
}