SOURCE

<div class="loader"></div>

.loader{
    height: 120px;
    width: 120px;
    border-radius:50%;
    border: 15px solid rgb(214, 215, 216); 
    border-top: 16px solid #8338ec;
    animation: spin 1.5s ease infinite;
}
@keyframes spin{
    0%{
        transform: rotate(0deg);
    }
    100%{
        transform: rotate(360deg);
    }
}