#main-header img{
    width: 100%;
    height: 100%;
}

#main-header .port-item{
    width: 30%;
}

#main-header .port-item:hover{
    opacity: 0.8;
    cursor : pointer;
}

.bg-black{
    color: white;
    background: black;
}

@media (min-width : 1199px)
{
    .port-item{
        padding: 2em !important;
    }
}