Try to use the next custom CSS code:
.single-product .connect-block-element-zBnAx {align-items: end;}
.single-product .et_connect-block.flex-row>form {
max-width: 70%;
}
.single-product .et_b_single-request-quote-button {
margin-bottom: 20px;
}
@media only screen and (max-width: 480px) {
.single-product .et_connect-block.flex-row>form {
max-width: 40%;
}
}
Regards