* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    background-image: linear-gradient(rgba(200, 0, 0, .5), rgba(0, 200, 0, .5), rgba(0, 0, 200, .5));
    height: 100vh;
}

#app {
    width: 400px;
    height: 400px;
    margin: 0 auto;
    position: relative;
}

.marker {
    position: absolute;
    width: 60px;
    left: 172px;
    top: -20px;
    z-index: 2;
}

.wheel {
    width: 100%;
    height: 100%;
}

.button {
    display: block;
    width: 250px;
    margin: 40px auto;
    cursor: pointer;
}

.button:hover {
    opacity: .8;
}

.blur {
    animation: blur 10s;
}

@keyframes blur {
    0% {
        filter: blur(1px);
    }
    80% {
        filter: blur(1px);
    }
    100% {
        filter: blur(0px);
    }
}