Hello Adam,
Thanks for updating thread. 
Please add following CSS under Pro > Theme Options > CSS:
.woocommerce-account form select, .woocommerce-account form textarea, .woocommerce-account form input[type="tel"], .woocommerce-account form input[type="text"], .woocommerce-account form input[type="email"], .woocommerce-account form input[type="password"], .woocommerce-checkout form select, .woocommerce-checkout form textarea, .woocommerce-checkout form input[type="tel"], .woocommerce-checkout form input[type="text"], .woocommerce-checkout form input[type="email"], .woocommerce-checkout form input[type="password"] {
padding: 26px 0;
margin-bottom: 15px;
border-radius: 10px;
}
.woocommerce-account form h3, .woocommerce-checkout form h3 {
font-size: 120%;
font-weight: normal;
}
.woocommerce-billing-fields label {
font-size: 80%;
}
div#payment button#place_order {
background-color: #f9c546;
border-color: transparent;
}
.woocommerce-account form h3, .woocommerce-checkout form h3 {
font-size: 90%;
}
div#order_review {
font-size: 90%;
}
div#order_review table th {
font-size: 90%;
font-weight: normal;
}
div#order_review table td {
font-size: 78%;
}
Thanks.