index.html

<div class="busy-loader">
    <div class="w-ball-wrapper ball-1">
        <div class="w-ball">
        </div>
    </div>
    <div class="w-ball-wrapper ball-2">
        <div class="w-ball">
        </div>
    </div>
    <div class="w-ball-wrapper ball-3">
        <div class="w-ball">
        </div>
    </div>
    <div class="w-ball-wrapper ball-4">
        <div class="w-ball">
        </div>
    </div>
    <div class="w-ball-wrapper ball-5">
        <div class=" w-ball">
        </div>
    </div>
</div>

style.css

body {
    background-color: #00A9DA;
}

.busy-loader {
    position: absolute;
    width: 90px;
    height: 90px;
    margin: auto;
    top: 50%;
    left: 50%;
    margin-left: -45px;
    margin-top: -45px;

    .w-ball-wrapper {
        position: absolute;
        width: 86px;
        height: 86px;
        opacity: 0;
        -moz-transform: rotate(225deg);
        -moz-animation: orbit 4.4s infinite;
        -webkit-transform: rotate(225deg);
        -webkit-animation: orbit 4.4s infinite;
        -ms-transform: rotate(225deg);
        -ms-animation: orbit 4.4s infinite;
        -o-transform: rotate(225deg);
        -o-animation: orbit 4.4s infinite;
        transform: rotate(225deg);
        animation: orbit 4.4s infinite;

        .w-ball {
            position: absolute;
            width: 7px;
            height: 7px;
            background: #FFFFFF;
            left: 0px;
            top: 0px;
            -moz-border-radius: 11px;
            -webkit-border-radius: 11px;
            -ms-border-radius: 11px;
            -o-border-radius: 11px;
            border-radius: 11px;
        }
    }

    .ball-1 {
        -moz-animation-delay: 0.96s;
        -webkit-animation-delay: 0.96s;
        -ms-animation-delay: 0.96s;
        -o-animation-delay: 0.96s;
        animation-delay: 0.96s;
    }

    .ball-2 {
        -moz-animation-delay: 0.19s;
        -webkit-animation-delay: 0.19s;
        -ms-animation-delay: 0.19s;
        -o-animation-delay: 0.19s;
        animation-delay: 0.19s;
    }

    .ball-3 {
        -moz-animation-delay: 0.38s;
        -webkit-animation-delay: 0.38s;
        -ms-animation-delay: 0.38s;
        -o-animation-delay: 0.38s;
        animation-delay: 0.38s;
    }

    .ball-4 {
        -moz-animation-delay: 0.58s;
        -webkit-animation-delay: 0.58s;
        -ms-animation-delay: 0.58s;
        -o-animation-delay: 0.58s;
        animation-delay: 0.58s;
    }

    .ball-5 {
        -moz-animation-delay: 0.77s;
        -webkit-animation-delay: 0.77s;
        -ms-animation-delay: 0.77s;
        -o-animation-delay: 0.77s;
        animation-delay: 0.77s;
    }
}

@-moz-keyframes orbit {
    0% {
        opacity: 1;
        z-index: 99;
        -moz-transform: rotate(180deg);
        -moz-animation-timing-function: ease-out;
    }

    7% {
        opacity: 1;
        -moz-transform: rotate(300deg);
        -moz-animation-timing-function: linear;
        -moz-origin: 0%;
    }

    30% {
        opacity: 1;
        -moz-transform: rotate(410deg);
        -moz-animation-timing-function: ease-in-out;
        -moz-origin: 7%;
    }

    39% {
        opacity: 1;
        -moz-transform: rotate(645deg);
        -moz-animation-timing-function: linear;
        -moz-origin: 30%;
    }

    70% {
        opacity: 1;
        -moz-transform: rotate(770deg);
        -moz-animation-timing-function: ease-out;
        -moz-origin: 39%;
    }

    75% {
        opacity: 1;
        -moz-transform: rotate(900deg);
        -moz-animation-timing-function: ease-out;
        -moz-origin: 70%;
    }

    76% {
        opacity: 0;
        -moz-transform: rotate(900deg);
    }

    100% {
        opacity: 0;
        -moz-transform: rotate(900deg);
    }
}

@-webkit-keyframes orbit {
    0% {
        opacity: 1;
        z-index: 99;
        -webkit-transform: rotate(180deg);
        -webkit-animation-timing-function: ease-out;
    }

    7% {
        opacity: 1;
        -webkit-transform: rotate(300deg);
        -webkit-animation-timing-function: linear;
        -webkit-origin: 0%;
    }

    30% {
        opacity: 1;
        -webkit-transform: rotate(410deg);
        -webkit-animation-timing-function: ease-in-out;
        -webkit-origin: 7%;
    }

    39% {
        opacity: 1;
        -webkit-transform: rotate(645deg);
        -webkit-animation-timing-function: linear;
        -webkit-origin: 30%;
    }

    70% {
        opacity: 1;
        -webkit-transform: rotate(770deg);
        -webkit-animation-timing-function: ease-out;
        -webkit-origin: 39%;
    }

    75% {
        opacity: 1;
        -webkit-transform: rotate(900deg);
        -webkit-animation-timing-function: ease-out;
        -webkit-origin: 70%;
    }

    76% {
        opacity: 0;
        -webkit-transform: rotate(900deg);
    }

    100% {
        opacity: 0;
        -webkit-transform: rotate(900deg);
    }
}

@-ms-keyframes orbit {
    0% {
        opacity: 1;
        z-index: 99;
        -ms-transform: rotate(180deg);
        -ms-animation-timing-function: ease-out;
    }

    7% {
        opacity: 1;
        -ms-transform: rotate(300deg);
        -ms-animation-timing-function: linear;
        -ms-origin: 0%;
    }

    30% {
        opacity: 1;
        -ms-transform: rotate(410deg);
        -ms-animation-timing-function: ease-in-out;
        -ms-origin: 7%;
    }

    39% {
        opacity: 1;
        -ms-transform: rotate(645deg);
        -ms-animation-timing-function: linear;
        -ms-origin: 30%;
    }

    70% {
        opacity: 1;
        -ms-transform: rotate(770deg);
        -ms-animation-timing-function: ease-out;
        -ms-origin: 39%;
    }

    75% {
        opacity: 1;
        -ms-transform: rotate(900deg);
        -ms-animation-timing-function: ease-out;
        -ms-origin: 70%;
    }

    76% {
        opacity: 0;
        -ms-transform: rotate(900deg);
    }

    100% {
        opacity: 0;
        -ms-transform: rotate(900deg);
    }
}

@-o-keyframes orbit {
    0% {
        opacity: 1;
        z-index: 99;
        -o-transform: rotate(180deg);
        -o-animation-timing-function: ease-out;
    }

    7% {
        opacity: 1;
        -o-transform: rotate(300deg);
        -o-animation-timing-function: linear;
        -o-origin: 0%;
    }

    30% {
        opacity: 1;
        -o-transform: rotate(410deg);
        -o-animation-timing-function: ease-in-out;
        -o-origin: 7%;
    }

    39% {
        opacity: 1;
        -o-transform: rotate(645deg);
        -o-animation-timing-function: linear;
        -o-origin: 30%;
    }

    70% {
        opacity: 1;
        -o-transform: rotate(770deg);
        -o-animation-timing-function: ease-out;
        -o-origin: 39%;
    }

    75% {
        opacity: 1;
        -o-transform: rotate(900deg);
        -o-animation-timing-function: ease-out;
        -o-origin: 70%;
    }

    76% {
        opacity: 0;
        -o-transform: rotate(900deg);
    }

    100% {
        opacity: 0;
        -o-transform: rotate(900deg);
    }
}

@keyframes orbit {
    0% {
        opacity: 1;
        z-index: 99;
        transform: rotate(180deg);
        animation-timing-function: ease-out;
    }

    7% {
        opacity: 1;
        transform: rotate(300deg);
        animation-timing-function: linear;
        origin: 0%;
    }

    30% {
        opacity: 1;
        transform: rotate(410deg);
        animation-timing-function: ease-in-out;
        origin: 7%;
    }

    39% {
        opacity: 1;
        transform: rotate(645deg);
        animation-timing-function: linear;
        origin: 30%;
    }

    70% {
        opacity: 1;
        transform: rotate(770deg);
        animation-timing-function: ease-out;
        origin: 39%;
    }

    75% {
        opacity: 1;
        transform: rotate(900deg);
        animation-timing-function: ease-out;
        origin: 70%;
    }

    76% {
        opacity: 0;
        transform: rotate(900deg);
    }

    100% {
        opacity: 0;
        transform: rotate(900deg);
    }
}

Windows like Busy loader.markdown

Windows like Busy loader

A little smooth css busy indicator inspired by Windows 8 / Windows 10

A Pen by Dave on CodePen.

License.