nav .smallogo {
    height: 50px;
    top: 8px;
    opacity: 0.5;
    transition: opacity 0.3s;
}

nav .smallogo:hover {
    opacity: 1;
}


header .biglogo {
    width: 50% !important;
    max-width: 320px;
    height: auto;
}


header .biglogo.pos_topLeft {
    position: absolute;
    top: 30px;
    left: 4%;
}

header .biglogo.pos_topRight {
    position: absolute;
    top: 30px;
    right: 4%;
}

header .biglogo.pos_bottomLeft {
    position: absolute;
    bottom: 70px;
    left: 4%;
}

header .biglogo.pos_bottomRight {
    position: absolute;
    bottom: 70px;
    right: 4%;
}