2 column form at different points - text fields and drop down select

Site URL: https://malenyvedicvillage.squarespace.com/

Hello community!! I am using the below code to have 'email' and 'phone' fields on the same line in this form...

/* 2 column form */
@media screen and (min-width:768px) {
div#block-yui_3_17_2_1_1663306565143_2737 {
.form-item.field.email {
    float: left;
    width: 49%;
    margin-right: 2%;
}
.form-item.field.email+div {
    float: left;
    width: 49%;
}
}
}

It works perfectly but I have also been trying to float the fields 'zip/postal code' and 'country' to no avail. 

I would also like to have the drop down select on the same line.... 'what is the reason for your interest?' and 'what is your budget?'

Please help. I have tried all sorts of other code snippets and can't get it to work. Site pw is : Maharishi

Many thanks for any help!!!!

Very happy, thank you!!!!! Works great 🙂