nav {
    width: 76%;
}

header ul {
    display: flex;
    justify-content: space-between;
    list-style-type: none;
    margin: 0px;
    padding: 0px;
    align-items: center;
    height: 100%;
}

header ul li img {
    display: block;
    height: 5vw;
    line-height: 60px;
    padding: 10px 30px;
    color: #fff !important;
    font-size: 1vw;
    font-weight: bold;
    text-decoration: none !important;
}

@media (max-width: 768px) {
    nav {
        width: 100%;
    }

    nav ul {
        display: flex;
        justify-content: space-between;
        list-style-type: none;
        margin: 0px;
        padding: 0px;
        align-items: center;
        height: 100%;
    }

    nav ul li img {
     height: 15vw;
    }

}