@media only screen and (max-width: 768px) {
 .navbar {
    position: relative;
    min-height: 0px;
    margin-bottom: 17px;
    border: 1px solid transparent;
}
 }
 
 @media only screen and (min-width: 768px) {
 .navbar {
    position: relative;
    min-height: 50px;
    margin-bottom: 17px;
    border: 1px solid transparent;
}
 }