header{
    background-image: url(../img/datascope.jpg);
    background-position-y: 0px;
}

.header_cover{
    display: block;
    position: absolute;
    opacity: 0.15;
    width: 100%;
    height: 100vh;
    background-color: black;
}

.datascopeimage{
    min-width: 100%;
    width: 100%;
}

.datascopecache{
    display: none;
}