.loader {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 999999;
    background-color: rgba(37, 44, 51, 0.5);
}

.loader-element {
    display: block;
    position: relative;
    left: 50%;
    top: 50%;
    width: 150px;
    height: 150px;
    margin: -75px 0 0 -75px;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: #00faaa;
    -webkit-animation: 2s linear infinite spin;
    animation: 2s linear infinite spin;
}

.loader-element::before {
    position: absolute;
    content: '';
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: #f70044;
    -webkit-animation: 3s linear infinite spin;
    animation: 3s linear infinite spin;
}

.loader-element::after {
    position: absolute;
    content: '';
    top: 15px;
    left: 15px;
    right: 15px;
    bottom: 15px;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: #00faaa;
    -webkit-animation: 1.5s linear infinite spin;
    animation: 1.5s linear infinite spin;
}

@-webkit-keyframes spin {
    0% {
        -webkit-transform: rotate(0);
        -ms-transform: rotate(0);
        transform: rotate(0);
    }

    100% {
        -webkit-transform: rotate(360deg);
        -ms-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}

@keyframes spin {
    0% {
        -webkit-transform: rotate(0);
        -ms-transform: rotate(0);
        transform: rotate(0);
    }

    100% {
        -webkit-transform: rotate(360deg);
        -ms-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}