@charset "UTF-8";
/* Google Mapを囲う要素 */
.gmap {
  position: relative;
  width: 100%;
  height: 0;
  padding-top: 75%; /* 比率を4:3に固定 */
}
 
/* Google Mapのiframe */
.gmap iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}