<button type="submit" name="calc_shipping" value="1" class="fusion-button button-default fusion-button-default-size button"><?php esc_attr_e( 'Update totals', 'woocommerce' ); ?></button>

<button class="cart-multi-step-buttons" onclick="cart_ms_1()">
    Step 1
</button>
<script>
function cart_ms_1() {
jQuery('.cart_totals').addClass('visible1');
jQuery('.woocommerce-cart-form').addClass('visible1');
}
</script>

jQuery("button[name='calc_shipping']").click(function(){jQuery...}