#loadingScreen {
    
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #040a22;
    z-index: 9999;
}

.loader {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10vh;
    height: 10vh;
    border-radius: 50%;
    margin: 3em;
    display: inline-block;
    position: relative;
    vertical-align: middle;
}
.loader,
.loader:before,
.loader:after {
    animation: 1s infinite ease-in-out;
}
.loader:before,
.loader:after {
    width: 100%; 
    height: 100%;
    border-radius: 50%;
    position: absolute;
    top: 0;
    left: 0;
}

.loader-black { background-color: #040a22; }
.loader-3:before {
    content: '';
    border: 10px solid white;
    top: -10vh;
    left: -10vh;
    animation-name: loader3;
}

    @keyframes loader3 {
        0% { transform: scale(0); }
        100% { transform: scale(1); }
    }