SCSS: Responsive iFrame

/* Then style the iframe to fit in the container div with full height and width */
.responsive-iframe {
    position: relative;
    overflow: hidden;
    width: 100%;
    padding-top: 56.25%; /* 16:9 Aspect Ratio (divide 9 by 16 = 0.5625) */

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

    // 4:3 Aspect Ratio
    &--4_3 {
        @extend .responsive-iframe;
        padding-top: 75%; /* 4:3 Aspect Ratio */
    }

    // 3:2 Aspect Ratio
    &--3_2 {
        @extend .responsive-iframe;
        padding-top: 66.66%; /* 3:2 Aspect Ratio */
    }

    // 8:5 Aspect Ratio
    &--8_5 {
        @extend .responsive-iframe;
        padding-top: 62.5%; /* 8:5 Aspect Ratio */
    }

    // 1:1 Aspect Ratio (Height and Width is Always Equal)
    &--1_1 {
        @extend .responsive-iframe;
        padding-top: 100%; /* 1:1 Aspect Ratio */
    }
}