/*设置背景*/
body {
    background-color: #F3F2EA;
}

nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 15px 0 10px 0;
    text-align: center;
    z-index: 1000;

    background-color: rgba(255, 255, 255);
    box-shadow: 0 2px 2px rgba(0, 0, 0, 0.15);
    border-bottom-color: rgba(0, 0, 0, 0.08);
    transition: padding 400ms ease, box-shadow 400ms ease;

    .item {
        margin: 0 6%;

        padding: 2px 25px;
        
        text-decoration: none;
        font-size: 1rem;
        color: white;
        background-color: rgba(222, 58, 237, 0.5);
        border-bottom: 3px solid rgba(222, 58, 237, 0.5);
        border-right: 3px solid rgba(222, 58, 237, 0.5);
        border-radius: 20px 20px 20px 20px;

        cursor: pointer;
    }

}

nav.scrolled {
    padding: 4px 0 8px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

@media (max-width: 600px) {
    nav >.item {
        margin: 0 3%;
    }
}