.nav-wrap {
    position: relative;
}

.fanyi {
    position: absolute;
    top: 100%;
    z-index: 999;
}

.fanyi img {
    width: 60%;
}

#fanyi2 {
    display: none;
}

@media(max-width:768px) {
    .fanyi {
        display: none;
    }

    body {
        position: relative;
    }

    .fanyi2 {
        position: absolute;
        display: block;
        top: 1.7%;
        z-index: 999;
        right: 1%;
    }

    .fanyi2 img {
        width: 45%;
    }
}