Media Query CSS for WPUF Multi-step form issue

@media (min-width:320px)  {
/* smartphones, portrait iPhone, portrait 480x320 phones (Android) */
.wpuf-step-wizard li {
width: auto !important;
}
}
@media (min-width:480px)  {
/* smartphones, Android phones, landscape iPhone */
.wpuf-step-wizard li {
width: auto !important;
}
}
@media (min-width:600px)  {
/* portrait tablets, portrait iPad, e-readers (Nook/Kindle), landscape 800x480 phones (Android) */
.wpuf-step-wizard li {
width: auto !important;
}
}
@media (min-width:801px)  {
/* tablet, landscape iPad, lo-res laptops ands desktops */
.wpuf-step-wizard li {
width: auto !important;
}
}
@media (min-width:1025px) {
/* big landscape tablets, laptops, and desktops */
.wpuf-step-wizard li {
width: auto !important;
}
}