.single-product form.cart .amt-next-custom-fields {
    order: -20;
    flex: 1 0 100%;
    width: 100%;
    min-width: 100%;
    margin: 0 0 14px;
}

.single-product form.cart .amt-next-custom-fields .amt-next-field {
    width: 100%;
    margin: 0 0 12px;
}

.single-product form.cart .amt-next-custom-fields .amt-next-field:last-child {
    margin-bottom: 0;
}

.single-product form.cart .amt-next-custom-fields .amt-next-field--link {
    order: -10;
    margin-bottom: 14px;
}

.single-product form.cart .amt-next-custom-fields .amt-next-input,
.single-product form.cart .amt-next-custom-fields input[name="amt_next_fields[link]"],
.single-product form.cart .amt-next-custom-fields input[name="amt_next_fields[username]"],
.single-product form.cart .amt-next-custom-fields textarea[name="amt_next_fields[custom_comment]"] {
    width: 100%;
    min-width: 100%;
    box-sizing: border-box;
}

.single-product form.cart .amt-next-custom-fields .amt-next-field--link .amt-next-input,
.single-product form.cart .amt-next-custom-fields .amt-next-field--link input,
.single-product form.cart .amt-next-custom-fields .amt-next-field--link textarea {
    height: 44px;
    min-height: 44px;
    max-height: 44px;
    padding: 8px 12px;
    font-size: 15px;
    line-height: 1.2;
    resize: none;
}

.single-product form.cart .amt-next-custom-fields .amt-next-field--link label {
    display: block;
    margin-bottom: 6px;
    font-weight: 700;
}

.single-product form.cart .ss-actions {
    width: 100%;
}

@media (max-width: 767px) {
    .single-product form.cart .amt-next-custom-fields .amt-next-field--link .amt-next-input,
    .single-product form.cart .amt-next-custom-fields .amt-next-field--link input,
    .single-product form.cart .amt-next-custom-fields .amt-next-field--link textarea {
        height: 42px;
        min-height: 42px;
        max-height: 42px;
        font-size: 14px;
    }
}