* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

body {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loader {
    height: 200px;
    width: 200px;
    border: 12px solid #e3e3e3;
    border-radius: 50%;
    border-right-color: #4070f4;
    animation: spin 1s infinite;
}

@keyframes spin {
    100% {
        transform: rotate(360deg);
    }
}