#cube-loader{
    position: fixed;
    top: 0px;
    bottom: 0px;
    left: 0px;
    right: 0px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(5, 5, 5, 0.73);
    z-index: 999;
}

#cube-loader .caption {
    margin: 0 auto;
}
#cube-loader .cube-loader {
    width: 73px;
    height: 73px;
    margin: 0 auto;
    margin-top: 49px;
    position: relative;
    transform: rotateZ(45deg);
}
#cube-loader .cube-loader .cube {
    position: relative;
    transform: rotateZ(45deg);
    width: 50%;
    height: 50%;
    float: left;
    transform: scale(1.1);
}
#cube-loader .cube-loader .cube:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #2096DA;
    animation: cube-loader 1.76s infinite linear both;
    transform-origin: 100% 100%;
}
#cube-loader .cube-loader .loader-2 {
    transform: scale(1.1) rotateZ(90deg);
}
#cube-loader .cube-loader .loader-3 {
    transform: scale(1.1) rotateZ(180deg);
}
#cube-loader .cube-loader .loader-4 {
    transform: scale(1.1) rotateZ(270deg);
}
#cube-loader .cube-loader .loader-2:before {
    animation-delay: 0.20s;
}
#cube-loader .cube-loader .loader-3:before {
    animation-delay: 0.49s;
}
#cube-loader .cube-loader .loader-4:before {
    animation-delay: 0.44s;
}

@keyframes cube-loader {
    0%, 10% {
        transform: perspective(136px) rotateX(-180deg);
        opacity: 0;
    }
    25%, 75% {
        transform: perspective(136px) rotateX(0deg);
        opacity: 1;
    }
    90%, 100% {
        transform: perspective(136px) rotateY(180deg);
        opacity: 0;
    }
}