.ui-datepicker {
  width: auto;
  min-width: 17em;
}

.kalendarz {
  min-height: 268px;
}

.ui-datepicker td {
  line-height: 2;
}
.ui-datepicker td span,
.ui-datepicker td a {
  text-align: center
}

.ui-datepicker-calendar td {
  position: relative;
}

.ui-datepicker-calendar .hide {
  position: absolute;
  z-index: 1;
  top: 1px;
  left: 95%;
  background: #f38f2e;
  list-style-type: none;
  padding: 4px;
  margin: 0;
  text-align: center;
}

.ui-datepicker-calendar .hide a {
  display: inline-block;
/*  width: 60px;
  height: 80px;*/
  border: 1px solid #000;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
  padding: 0;
}

.ui-datepicker-calendar .hide a:after {
  content: ' ';
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #f38f2e;
  opacity: 0;
  -webkit-transition: opacity .2s ease-in-out;
  -moz-transition: opacity .2s ease-in-out;
  -o-transition: opacity .2s ease-in-out;
  transition: opacity .2s ease-in-out;
}

.ui-datepicker-calendar .hide a:hover:after {
  opacity: .25;
}

.ui-datepicker-calendar .hide li + li {
  margin-top: 4px;
}

.kalendarz td:hover .hide {
  display: block !important;
}