#header {
    background: transparent;
}

#header #logo{
    float: none;
    text-align: center;
    padding-top: 30px;
}

@media only screen and (max-width: 767px){
    #header{
        height: 120px;
    }
    #header #logo{
        padding-top: 20px;
    }
    #header #logo img{
        width: 80%;
    }
}