@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

button {
    display: block;
    background-color: white;
    border-color: red;
    border-width: 2px;
    color: red;
    font-family: 'Open Sans', sans-serif;
    font-weight: bolder;
    font-size: 25px;
    margin: 0 auto;
    margin-top: 20%;
    height: 100px;
    width: 240px;
    border-radius: 10px;
    text-align: center;
    cursor: pointer;
}

button:active {
    animation-name: spin;
    animation-duration: 500ms;
    animation-iteration-count: infinite;
    animation-timing-function: linear;
}