How to set section background colour opacity to 0

Site URL: https://www.cheesierpasta.net/thor-home

I am wanting to remove the section[data-section-id="6273f7fff7a2200fbdd3ec88"] 's white background so that the page will have the gradient and I dont need to worry about scaling issues.

I am unsure how to do this.

I see you used this CSS, however, in Custom CSS, you need to use full image url, unless the CSS won't work on live mode

section[data-section-id="6273f7fff7a2200fbdd3ec88"] {
    background-image: url("/s/clouds.png")
}

The code should be

section[data-section-id="6273f7fff7a2200fbdd3ec88"] {
    background-image: url("https://www.cheesierpasta.net/s/clouds.png")
}
section[data-section-id="6273f7fff7a2200fbdd3ec88"] .section-background {
    opacity: 0;
}