body {
    margin: 0;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #ffff;
    overflow: hidden;
    opacity: 1;
    transition: opacity 1s ease-out;
}

body.fade-out {
    opacity: 0;
    animation: burst 1s forwards;
}

@keyframes burst {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.5);
    }
    100% {
        transform: scale(0);
    }
}

.loader {
    width: 10em;
    height: 10em;
    font-size: 25px;
    box-sizing: border-box;
    border-top: 0.3em solid #1d4e9d;
    border-radius: 50%;
    position: relative;
    animation: rotating 2s ease-in-out infinite;
    --direction: 1;
}

.loader::before,
.loader::after {
    content: '';
    position: absolute;
    width: inherit;
    height: inherit;
    border-radius: 50%;
    box-sizing: border-box;
    top: -0.2em;
}


.loader::before {
     0.3em solid dodgerblue;
    transform:rotate(120deg);
}
    

.loader::after {
    border-top: 0.3em solid gold;
    transform: rotate(240deg);
}

.loader span {
    position: absolute;
    color: #1d4e9d;
    width: inherit;
    height: inherit;
    text-align: center;
    line-height: 10em;
    font-family: sans-serif;
    animation: rotating 2s linear infinite;
    --direction: -1;
}

@keyframes rotating {
    50% {
        transform: rotate(calc(180deg * var(--direction)));
    }
    100% {
        transform: rotate(calc(360deg * var(--direction)));
    }
}