.cta_btn_center {
    bottom: 2%;
    left: 51%;
}

.tubeFrame {
    position: absolute;
    top: 47%;
    width: 93%;
    left: 50%;
    transform: translateX(-50%);
    border: 10px solid white;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* -------- 初期位置 -------- */
.fv {
  position: relative;
  display: inline-block;
  width: 100%;
}

.refund {
    position: absolute;
    width: 25%;
    height: 32px;
    top: 60%;
    right: 22%;
}

iframe {
    width: 100%;
    height: 408px;
}

@media (width <= 767px) {
    iframe {
        height: 218px;
    }
    .tubeFrame {
        top: 46.5%;
	}
}