.header_img{
    position: relative;
    overflow: hidden;
}

.youtube_bg{
    position: relative;
    padding: 0 0 50%;

}

.youtube_bg:hover{
    margin-bottom: 0px;
}

.youtube_bg iframe{
    position: absolute;
    width: 100%;
    height: 100%;
}

@media screen and (max-width:600px){
    .youtube_bg{
        margin-top: 0;
        margin-bottom: 0;
    }
}

.header_img p{
    display: block;
    position: absolute;
    top: 25%;
    left: 10%;
    z-index: 200;
}

@media screen and (max-width:780px){
    .header_img p{
        display: block;
        position: absolute;
        top: 50%;
        left: 50%;
        width: 100%;
        text-align: center;
        -webkit-transform: translate(-50%,-50%);
        -ms-transform: translate(-50%,-50%);
        transform: translate(-50%,-50%);
    }
}

.top_header_catch{
    display: block;
    color: #fff;
    font-size: 100px;
    font-weight: bold;
    line-height: 1.4;
    text-shadow: 0 1px 2px rgba(0,0,0,.5);
}