/* map.css */
.map-container {
  position: relative;
  width: 100%;
  height: 300px;
  overflow: hidden;
}

.map-container iframe {
  position: absolute;
  top: -56px; /* ヘッダー分ずらす */
  left: 0;
  width: 100%;
  height: 356px; /* 300px + 56px */
  border: none;
  outline: none;
  box-shadow: none;
}