<div></div>

body,
html {
    width: 100%;
    height: 100%;
    display: flex;
}

@property --per {
    syntax: "<percentage>";
    inherits: false;
    initial-value: 10%;
}

div {
    position: relative;
    margin: auto;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    animation: rotate 11s infinite ease-in-out;

    &::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        border-radius: 50%;
        background: conic-gradient(transparent, transparent var(--per), #fa7 var(--per), #fa7);
        mask: radial-gradient(transparent, transparent 47.5px, #000 48px, #000);
        animation: change 3s infinite cubic-bezier(0.57, 0.29, 0.49, 0.76);
    }
}

@keyframes change {
    50% {
        transform: rotate(270deg);
        --per: 98%;
    }
    100% {
        transform: rotate(720deg);
    }
}

@keyframes rotate {
    100% {
        transform: rotate(360deg);
        filter: hue-rotate(360deg);
    }
}