.wrapper {
    width: 100%;
}

.container {
    height: 0;
    width: 100%;
    padding-bottom: 100%;
    overflow: hidden;
    position: relative;
}

.container iframe {
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
    position: absolute;
	 

}