#divProgress
{
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
    background-color: #fff;
    padding-top: 15%;
    z-index: 99999;
}

.loader
{
    width: 150px;
    height: 150px;
    margin: 40px auto;
    transform: rotate(-45deg);
    font-size: 0;
    line-height: 0;
    animation: rotate-loader 5s infinite;
    padding: 25px;
    border: 1px solid #f55757;
}

    .loader .loader-inner
    {
        position: relative;
        display: inline-block;
        width: 50%;
        height: 50%;
    }

    .loader .loading
    {
        position: absolute;
        background: #f55757;
    }

    .loader .one
    {
        width: 100%;
        bottom: 0;
        height: 0;
        animation: loading-one 1s infinite;
    }

    .loader .two
    {
        width: 0;
        height: 100%;
        left: 0;
        animation: loading-two 1s infinite;
        animation-delay: 0.25s;
    }

    .loader .three
    {
        width: 0;
        height: 100%;
        right: 0;
        animation: loading-two 1s infinite;
        animation-delay: 0.75s;
    }

    .loader .four
    {
        width: 100%;
        top: 0;
        height: 0;
        animation: loading-one 1s infinite;
        animation-delay: 0.5s;
    }

@keyframes loading-one
{
    0%
    {
        height: 0;
        opacity: 1;
    }

    12.5%
    {
        height: 100%;
        opacity: 1;
    }

    50%
    {
        opacity: 1;
    }

    100%
    {
        height: 100%;
        opacity: 0;
    }
}

@keyframes loading-two
{
    0%
    {
        width: 0;
        opacity: 1;
    }

    12.5%
    {
        width: 100%;
        opacity: 1;
    }

    50%
    {
        opacity: 1;
    }

    100%
    {
        width: 100%;
        opacity: 0;
    }
}

@keyframes rotate-loader
{
    0%
    {
        transform: rotate(-45deg);
    }

    20%
    {
        transform: rotate(-45deg);
    }

    25%
    {
        transform: rotate(-135deg);
    }

    45%
    {
        transform: rotate(-135deg);
    }

    50%
    {
        transform: rotate(-225deg);
    }

    70%
    {
        transform: rotate(-225deg);
    }

    75%
    {
        transform: rotate(-315deg);
    }

    95%
    {
        transform: rotate(-315deg);
    }

    100%
    {
        transform: rotate(-405deg);
    }
}