.containerAstoundYoutubeCasestudyContain{
background-color:#111;
}
.containerAstoundYoutubeCasestudy{
    position: relative;
    width: 100%;
    max-width:1920px;
    margin-left:auto;
    margin-right:auto;
    height: 0;
    padding-bottom: 56.25%; 

}

.containerAstoundYoutubeCasestudyVideo{

    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    }