*{
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
}
.container{
    width: 100vw;
    height: 100vh;
    background-color: bisque;
    display: flex;
    justify-content: center;
    align-items: center;
}
.circle{
    width: 80px;
    height: 80px;
    border: 10px solid black;
    border-top: 10px solid transparent;
    border-radius: 50%;
    animation-name: rotate;
    animation-duration: 1s; 
    animation-timing-function: linear;
    animation-iteration-count: infinite; 
}
@keyframes rotate{
    from{
        transform: rotate(0deg);
    }
    to{
        transform: rotate(360deg);
    }
}