How to fix text blocks on page while images scroll behind?

You can identify the block IDs and then fix their position on the page like this with Custom CSS:

//Coming
#block-yui_3_17_2_1_1691333637302_7095 {
    position: fixed;
    top: 50%;
    left: 10%;
}
// Soon
#block-b9911e3618d3d3eddf31 {
    position: fixed;
    top: 50%;
    right: 10%;
}

//Instagram
#block-0083c4e84269bef21a19 {
    position: fixed;
    top: 90%;
    left: 50%;
}

// Image
#block-yui_3_17_2_1_1687106281601_11419 {
    position: fixed;
    top: 50%;
    left: 50%;
}