/*
Theme Name: Lightning Child
Theme URI: 
Template: lightning
Description: 
Author: 
Tags: 
Version: 0.6.0
*/

.iframeWrapper {
    position: relative;
}

.iframeWrapper::before {
    content: "";
    display: block;
    padding-top: calc(タテ / ヨコ * 100%);
}

.iframeWrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: 100%;
}