.container-alerts {
  z-index: 10;
  position: fixed;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  top: 0px;
}
.container-alerts.inactive {
  display: none;
}
.container-alerts > div.inactive {
  display: none;
}
.container-alerts > div.alert-datepicker-error {
  width: 260px;
  position: absolute;
  top: 50%;
  left: 50%;
  margin-left: -110px;
  margin-top: -90px;
  border: 1px solid #ccc;
  background: #fff;
  text-align: center;
  padding: 15px;
}
.container-alerts > div.alert-datepicker-error p {
  font-size: 16px;
  display: inline-block;
  color: #337ab7;
  letter-spacing: 1px;
}
.container-alerts > div.alert-datepicker-error a {
  font-size: 14px;
  letter-spacing: 1px;
  width: 80px;
  line-height: 30px;
  border: 1px solid #337ab7;
  background: #337ab7;
  color: #fff;
  display: inline-block;
}
.container-alerts > div.alert-datepicker-error a:hover,
.container-alerts > div.alert-datepicker-error a:focus {
  text-decoration: none;
}