.ajaxLoader{
    /* with no content, nothing is rendered */
    display: none;
    content: "";
    position: absolute;
    /* element stretched to cover during rotation an aspect ratio up to 1/10 */
    top: 0;
    left: 0;
    z-index: 9999;
    pointer-events: all; /* to block content use: all */
    /* background */
    background-color: rgba(0,0,0,0.5);
    background-repeat: no-repeat;
    background-position: center center;
    background-size: 100px 100px;
}

.spinner {
    margin: auto;
    width: 50px;
    height: 50px;
    text-align: center;
    font-size: 10px;
}

.spinner > div {
    background-color: #fff;
    height: 100%;
    width: 6px;
    display: inline-block;
    margin: 2px;

    -webkit-animation: sk-stretchdelay 1.2s infinite ease-in-out;
    animation: sk-stretchdelay 1.2s infinite ease-in-out;
}

.spinner .rect2 {
    -webkit-animation-delay: -1.1s;
    animation-delay: -1.1s;
}

.spinner .rect3 {
    -webkit-animation-delay: -1.0s;
    animation-delay: -1.0s;
}

.spinner .rect4 {
    -webkit-animation-delay: -0.9s;
    animation-delay: -0.9s;
}

.spinner .rect5 {
    -webkit-animation-delay: -0.8s;
    animation-delay: -0.8s;
}

@-webkit-keyframes sk-stretchdelay {
    0%, 40%, 100% { -webkit-transform: scaleY(0.4) }  
    20% { -webkit-transform: scaleY(1.0) }
}

@keyframes sk-stretchdelay {
    0%, 40%, 100% { 
        transform: scaleY(0.4);
        -webkit-transform: scaleY(0.4);
    }  20% { 
        transform: scaleY(1.0);
        -webkit-transform: scaleY(1.0);
    }
}