body {
    padding-top: 60px;
    margin: 0;
}

ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #3c0000;
    position: fixed;
    top: 0;
    width: 100%;
    backdrop-filter: blur(15px);
    font-family: "Black Ops One", system-ui;
}

li {
    float: left;
}

li a {
    display: block;
    color: white;
    text-align: center;
    padding: 8px 16px;
    text-decoration: none;
    transition: 0.5s;
    border-radius: 2px;
}

li a:hover:not(.active) {
    background-color: #880106;
}

.active {
    background-color: #e32870;
    animation: fadeInActive 0.1s ease-in-out;
}

@keyframes fadeInActive {
    from {
        background-color: transparent;
    }
    to {
        background-color: #880106;
    }
}