Block missing background

Site URL: https://www.michellevinabaltsas.com/joyful-movement-at-last-new

I'd like all the modules to have the white background as module 4 and 5 have. 

Does anyone know why the first three are not in white? 

You used this code

#module .col.sqs-col-3.span-3 {
    background: #fff;
    padding: 15px 0px;
    box-sizing: border-box;
    margin: 10px;
    border-radius: 6px;
}

However, first 3 module is .span-2, not .span-3, so the code should be

#module .col.sqs-col-3.span-3, #module .col.sqs-col-2.span-2 {
    background: #fff;
    padding: 15px 0px;
    box-sizing: border-box;
    margin: 10px;
    border-radius: 6px;
}