body {
    margin: 0;
}

.spinner div {
    width: 5px;
    height: 5px;
    position: absolute;
    left: -20px;
    top: 10px;
    background-color: #fff;
    border-radius: 50%;
    animation: move 4s infinite cubic-bezier(.2,.64,.81,.23);
}
.spinner div:nth-child(2) {
    animation-delay: 150ms;
}
.spinner div:nth-child(3) {
    animation-delay: 300ms;
}
.spinner div:nth-child(4) {
    animation-delay: 450ms;
}
@keyframes move {
    0% {left: 0%;}
    75% {left:100%;}
    100% {left:100%;}
}

#maintenance{
    position: fixed;
    overflow: hidden;
    height: 100%;
    width: 100%;
    left: 0%;
    top: 0%;
    background-size: contain !important;
    background-repeat: no-repeat !important;
    background-position: center !important;
}