.loader {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 6rem;
    margin-top: 3rem;
    margin-bottom: 3rem;
}

.loader:before,
.loader:after {
    content: "";
    position: absolute;
    border-radius: 50%;
    animation: pulsOut 1.8s ease-in-out infinite;
    filter: drop-shadow(0 0 1rem rgba(195, 145, 80, 0.75));
}

.loader:before {
    width: 100%;
    padding-bottom: 100%;
    box-shadow: inset 0 0 0 1rem #f5b664;
    animation-name: pulsIn;
}

.loader:after {
    width: calc(100% - 2rem);
    padding-bottom: calc(100% - 2rem);
    box-shadow: 0 0 0 0 #fff;
}

@keyframes pulsIn {
    0% {
        box-shadow: inset 0 0 0 1rem #f5b664;
        opacity: 1;
    }
    50%, 100% {
        box-shadow: inset 0 0 0 0 #f5b664;
        opacity: 0;
    }
}

@keyframes pulsOut {
    0%, 50% {
        box-shadow: 0 0 0 0 #f5b664;
        opacity: 0;
    }
    100% {
        box-shadow: 0 0 0 1rem #f5b664;
        opacity: 1;
    }
}