@media (min-width: 1441px) and (max-width: 1830px){
    .imagens { height: 250px !important; }
    .bx-viewport, .bx-wrapper { height: 250px; }
}
@media (min-width: 1024px) and (max-width: 1440px){
    .imagens { height: 250px !important; }
    .bx-viewport, .bx-wrapper { height: 250px !important; }
}
@media (min-width: 768px) and (max-width: 1023px){
    .imagens { height: 200px !important; }
    .bx-viewport, .bx-wrapper { height: 200px; }
}
@media (min-width: 320px) and (max-width: 767px){
    .imagens { height: 150px !important; }
    .bx-viewport, .bx-wrapper { height: 150px; margin: 100px auto 0px; }
}