.submodal {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    overflow: visible !important;
}
.submodal.transition {
    -webkit-transition: all 0.3s ease;
    transition: all 0.3s ease;
}
.submodal.in { top: 0 !important; }
.submodal .modal-dialog {
    margin: 0 auto;
    z-index: 11000;
    padding-top: 0px !important;
}
.submodal .modal-content {
    border-top: none;
    -webkit-border-top-left-radius: 0;
    -moz-border-top-left-radius: 0;
    border-top-left-radius: 0;
    -webkit-border-top-right-radius: 0;
    -moz-border-top-right-radius: 0;
    border-top-right-radius: 0;
}
.submodal .modal-header { display: none; }
.modal.parent .modal-body { overflow: visible; }

@media (max-width:767px) {
    .submodal .modal-dialog {
        width: 90%;
    }
}