.bg {
    background-image: url(../img/cat-webp/cat001.webp);
    background-size: cover;
    background-position: center top;
    min-height: 100vh;
}

header {
    background: rgba(54, 54, 54, 0.7);  /* #363636 */
    padding: 0;
}

header .container {
    width: 100%;
    margin: 0 auto;
    padding: 20px 0;
    text-align: center;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

@media screen and (max-width: 640px) {
    ul {
        margin: 0 auto;
        padding: 0;
    }
}