html, body { height: 100%; }
body { overflow: hidden; position: relative; }

*,
*:after,
*:before {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}

.container > header {
    margin: 10px;
    padding: 20px 10px 10px 10px;
    position: relative;
    display: block;
    text-shadow: 1px 1px 1px rgba(0,0,0,0.2);
    text-align: center;
}

.container > header h1 {
    font-size: 30px;
    line-height: 38px;
    margin: 0;
    position: relative;
    font-weight: 300;
    color: #666;
    text-shadow: 0 1px 1px rgba(255,255,255,0.6);
}


.demo-dark .container > header h1,
.demo-dark .container > header h2 {
    color: #fff;
    text-shadow: 0 1px 1px rgba(0,0,0,0.7);
}

.demo-3 body {
    background-image: url(./dark_wall.jpg);
    background-color: #222;
}

.demo-3 body:after {
    content: "";
    z-index: -1;
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    background: -webkit-radial-gradient(center center, circle cover, rgba(0,0,0,0), rgba(0,0,0,0.75));
    background: radial-gradient(center center, circle cover, rgba(0,0,0,0), rgba(0,0,0,0.75));
}

.demo-3 .bokeh {
    font-size: 100px;
    width: 1em;
    height: 1em;
    position: relative;
    margin: 100px auto;
    border-radius: 50%;
    border: .01em solid rgba(150,150,150,0.1);
    list-style: none;
}

.demo-3 .bokeh li {
    position: absolute;
    width: .2em;
    height: .2em;
    border-radius: 50%;
}

.demo-3 .bokeh li:nth-child(1) {
    left: 50%;
    top: 0;
    margin: 0 0 0 -.1em;
    background: #00C176;
    -webkit-transform-origin: 50% 250%;
    transform-origin: 50% 250%;
    -webkit-animation:
            rota 1.13s linear infinite,
            opa 3.67s ease-in-out infinite alternate;
    animation:
            rota 1.13s linear infinite,
            opa 3.67s ease-in-out infinite alternate;
}

.demo-3 .bokeh li:nth-child(2) {
    top: 50%;
    right: 0;
    margin: -.1em 0 0 0;
    background: #FF003C;
    -webkit-transform-origin: -150% 50%;
    transform-origin: -150% 50%;
    -webkit-animation:
            rota 1.86s linear infinite,
            opa 4.29s ease-in-out infinite alternate;
    animation:
            rota 1.86s linear infinite,
            opa 4.29s ease-in-out infinite alternate;
}

.demo-3 .bokeh li:nth-child(3) {
    left: 50%;
    bottom: 0;
    margin: 0 0 0 -.1em;
    background: #FABE28;
    -webkit-transform-origin: 50% -150%;
    transform-origin: 50% -150%;
    -webkit-animation:
            rota 1.45s linear infinite,
            opa 5.12s ease-in-out infinite alternate;
    animation:
            rota 1.45s linear infinite,
            opa 5.12s ease-in-out infinite alternate;
}

.demo-3 .bokeh li:nth-child(4) {
    top: 50%;
    left: 0;
    margin: -.1em 0 0 0;
    background: #88C100;
    -webkit-transform-origin: 250% 50%;
    transform-origin: 250% 50%;
    -webkit-animation:
            rota 1.72s linear infinite,
            opa 5.25s ease-in-out infinite alternate;
    animation:
            rota 1.72s linear infinite,
            opa 5.25s ease-in-out infinite alternate;
}

@-webkit-keyframes rota {
    from { }
    to { -webkit-transform: rotate(360deg); }
}

@keyframes rota {
    from { }
    to { -webkit-transform: rotate(360deg); transform: rotate(360deg); }
}

@-webkit-keyframes opa {
    0% { }
    12.0% { opacity: 0.80; }
    19.5% { opacity: 0.88; }
    37.2% { opacity: 0.64; }
    40.5% { opacity: 0.52; }
    52.7% { opacity: 0.69; }
    60.2% { opacity: 0.60; }
    66.6% { opacity: 0.52; }
    70.0% { opacity: 0.63; }
    79.9% { opacity: 0.60; }
    84.2% { opacity: 0.75; }
    91.0% { opacity: 0.87; }
}

@keyframes opa {
    0% { }
    12.0% { opacity: 0.80; }
    19.5% { opacity: 0.88; }
    37.2% { opacity: 0.64; }
    40.5% { opacity: 0.52; }
    52.7% { opacity: 0.69; }
    60.2% { opacity: 0.60; }
    66.6% { opacity: 0.52; }
    70.0% { opacity: 0.63; }
    79.9% { opacity: 0.60; }
    84.2% { opacity: 0.75; }
    91.0% { opacity: 0.87; }
}