.preloader
{
    position: fixed;
    z-index: 999;
    top: 0;
    left: 0;

    visibility: visible;

    width: 100%;
    height: 100%;

    -webkit-transition: all 1s;
         -o-transition: all 1s;
            transition: all 1s;

    opacity: 1;
    background: #222;
}

.preloader-wrapper
{
    position: absolute;
    position: absolute;
    top: 50%;
    left: 50%;

    display: inline-block;

    -webkit-transform: translate(-50%, -50%);
        -ms-transform: translate(-50%, -50%);
         -o-transform: translate(-50%, -50%);
            transform: translate(-50%, -50%);
}

.sk-spinner-pulse
{
    width: 4em;
    height: 4em;
    margin: auto;

    -webkit-animation: sk-spinner-pulse 1.0s infinite ease-in-out;
            animation: sk-spinner-pulse 1.0s infinite ease-in-out;

    border-radius: 100%;
    background-color: #ffa507;
}

.preloader-done
{
    visibility: hidden;

    opacity: 0;
}

@-webkit-keyframes sk-spinner-pulse
{
    0%
    {
        -webkit-transform: scale(0);
                transform: scale(0);
    }
    100%
    {
        -webkit-transform: scale(1);
                transform: scale(1);

        opacity: 0;
    }
}

@keyframes sk-spinner-pulse
{
    0%
    {
        -webkit-transform: scale(0);
                transform: scale(0);
    }
    100%
    {
        -webkit-transform: scale(1);
                transform: scale(1);

        opacity: 0;
    }
}