.loader {
    max-width: 15rem;
    width: 100%;
    height: auto;
    stroke-linecap: round;
}

circle {
    fill: none;
    stroke-width: 3.5;
    -webkit-animation-name: preloader;
    animation-name: preloader;
    -webkit-animation-duration: 3s;
    animation-duration: 3s;
    -webkit-animation-iteration-count: infinite;
    animation-iteration-count: infinite;
    -webkit-animation-timing-function: ease-in-out;
    animation-timing-function: ease-in-out;
    transform-origin: 170px 170px;
    will-change: transform;
}

    circle:nth-of-type(1) {
        stroke-dasharray: 550px;
    }

    circle:nth-of-type(2) {
        stroke-dasharray: 500px;
    }

    circle:nth-of-type(3) {
        stroke-dasharray: 450px;
    }

    circle:nth-of-type(4) {
        stroke-dasharray: 300px;
    }

    circle:nth-of-type(1) {
        -webkit-animation-delay: -0.15s;
        animation-delay: -0.15s;
    }

    circle:nth-of-type(2) {
        -webkit-animation-delay: -0.3s;
        animation-delay: -0.3s;
    }

    circle:nth-of-type(3) {
        -webkit-animation-delay: -0.45s;
        animation-delay: -0.45s;
    }

    circle:nth-of-type(4) {
        -webkit-animation-delay: -0.6s;
        animation-delay: -0.6s;
    }

@-webkit-keyframes preloader {
    50% {
        transform: rotate(360deg);
    }
}

@keyframes preloader {
    50% {
        transform: rotate(360deg);
    }
}