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<div class="my-container">
    <h1>Scotch Scotch Scotch</h1>
</div>

.my-container {
    position: relative;
    background: white;
    overflow: hidden;
}
/* You could use :before - it doesn't really matter */
.my-container:after {
    content: ' ';
    display: block;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.6;
    background-image: url('http://placekitten.com/1500/1000');
    background-repeat: no-repeat;
    background-position: 50% 0;
    background-size: cover;
    background-attachment: fixed;
}