header {
    background: #fff;
    box-shadow: 0px 0px 10px 0px #00000040;
}


header nav {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 0 auto;
    box-sizing: border-box
}

header nav .logo img {
    display: block;
    width: 114px;
    height: 23px
}

@media (min-width: 960px) {
    header nav {
        width: 960px;
        height: 40px;
    }
}

@media (min-width: 768px) and (max-width:959px) {
    header nav {
        width: 768px;
        height: 40px;
    }

    header nav .logo {
        width: 146px;
        margin-top: 10px;
    }
}

@media (max-width: 767px) {
    header nav {
        width: 300px;
        height: 50px;
    }

    header nav .logo {
        width: 112px;
        margin-top: 5px;
    }
}