.ymaps-2-1-72-balloon__layout,
.ymaps-2-1-72-balloon__content,
.ymaps-2-1-72-balloon__tail:after {
  background: #1d334b !important;
  color: white;
}

ymaps[id] {
  height: auto !important;
}

@media (max-width: 320px) {
  .ymaps-2-1-72-balloon__layout,
  .ymaps-2-1-72-balloon__content,
  .ymaps-2-1-72-balloon__tail:after {
    display: none !important;
  }
}