Furniture Assembly Service - Selby
We assemble furniture so you don’t have to.
Get A Quote
Get A Quote
The top 8 reasons to choose Flat Pack Amigos in Selby
- Fixed Price - you know in advance what you will pay.
- Clear and Transparent Pricing - Easy to see what we are charging and why
- No Hidden Costs - except any parking charges
- 20+ Years Experience - Since 2004
- Genuine Great Testimonials
- Fully Trained and Experienced Assemblers
- Easy online automatic quote anytime day or night
- Easy online booking anytime day or night
Get A Quote
Flat Pack Amigos make the process effortless. Just fill out our contact form with details of the furniture supplier, product name, and product number, all easily accessible on the supplier’s website. We’ll then provide you with a fixed price quote and instructions on how to book. In just a few minutes, you could have your quote and job booked.
Serving Selby since 2004, Flat Pack Amigos has been the go-to choice for furniture assembly, aiding numerous residents across the area. Whether the furniture is oversized, laborious, time-intensive, or intricate, our team stands ready to alleviate your concerns. With a focus on seamless collaboration, simply articulate your assembly requirements, purchase origin, and we’ll swiftly present you with a clear-cut fixed-price estimate.
Get A Quote
When it comes to furniture assembly, Flat Pack Amigos is the perfect choice. Whether it’s a simple chair, stool, table, or chest, we excel at assembling them quickly. For more complex pieces such as wardrobes or bedroom sets, we may need a little extra time, but we guarantee precise assembly to the highest standards.
Numerous Selby residents have made the decision to permanently avoid flatpack assembly. They’ve given up on the frustration of deciphering confusing instructions, dealing with perplexing parts, and enduring the discomfort of pinched and blistered fingers. Instead, they’re turning to the most reliable and respected furniture assembly service in Selby: Flat Pack Amigos.
Get A Quote
With Flat Pack Amigos, you enjoy the convenience of One Fixed Price. While many furniture assembly services charge hourly rates, we provide clarity and consistency. You won’t be penalized for a slower assembler. We disclose the total cost upfront when you book your appointment, ensuring transparency. There are no hidden fees—what we quote is what you’ll pay, without any surprises.
At Flat Pack Amigos, our skilled assemblers are experienced in assembling any type of flat pack furniture. Regardless of your furniture choice, our capable team can handle it. They will arrive at your Selby location prepared with the necessary tools and expertise to complete the project promptly.
Get A Quote
If you’re looking for an easy-to-use Flat Pack Furniture Assembler in Selby, look no further than Flat Pack Amigos. You’ll be delighted with the outcome and won’t attempt assembly on your own again. Our Ikea Assembly Service is top-notch. We’re trained to assemble all types of flat pack furniture, regardless of the retailer.
Since 2004, retailers have turned to Flat Pack Amigos for flat pack assembly services. British high street, online, and catalogue retailers have consistently recommended our flat pack assembly experts to assemble furniture for their customers and set up furniture for their store displays and new season catalogue shoots. Retailers such as Argos, FABB Furniture, Trago Mills, The Range, Wayfair, Dunelm, JD Williams, IKEA, Bensons for Beds, Time 4 Sleep, Bed Kingdom, Furniture123, and many more have relied on our services. For further details, visit our Retailers pages.
Get A Quote
We have built the following items in North Yorkshire recently:
- JYSK - (Jungen) Display cabinet JUNGEN 2 doors wild oak SKU: 3648405
- Ikea - (Trysil) TRYSILWardrobe, white, mirror glass ( 103.087.87 )
- Ikea - (Fredde) FREDDE Workstation, black (502.190.44)
- Ikea - (Malm) MALM Ottoman bed, black-brown, Standard Double ( 504.048.19 )
- Ikea - (Pax) PAX Wardrobe, white/Hasvik PAX / GRIMO Wardrobe combination, white 150x60x201 cm ( 094.297.28 ) inc attaching to the wall
- Wayfair - (Denver) Denver 2 Door Sliding Wardrobe by Metro Lane SKU: hjme9700
- Ikea - (Malm) Malm Chest Of 4 Drawers White ( 304.035.71 )
- Ikea - (Malm) MALM Chest of 4 drawers, white stained oak veneer 80x100 cm ( 704.035.74 )
- Wayfair - (Denver) Denver 2 Door Sliding Wardrobe by Metro Lane SKU: hjme9700
- Ikea - (VIHALS) VIHALS Cabinet with sliding doors, white 95x47x90 cm ( 204.832.62 )
- Ikea - (LOMMARP) LOMMARP Cabinet with glass doors, dark blue-green 86x199 cm ( 403.837.37 )
- Ikea - (Hauga) HAUGA Wardrobe with sliding doors, grey 118x55x199 cm ( 604.072.71 )
- Next - (Flynn) Flynn 3 Drawer Chest 180-796
- Next - (Flynn) Flynn Double Wardrobe 186-812
- Next - (Flynn) Flynn 1 Drawer Bedside Table 170-470
- GENERAL - (attach to wall) Attach chest/ bookcase/wardrobe to wall (2 x brackets)
- GENERAL - (attach to wall) Attach chest/ bookcase/wardrobe to wall (2 x brackets)
- Ikea - (Pax) PAX Wardrobe frame, white, 100x58x236 cm ( 502.145.60 )
- Ikea - (Pax) Fardal Door High Gloss White ( 801.905.29 ) Including hinges and handles
- Ikea - (Pax) PAX Wardrobe frame, white, 50x58x236 cm ( 802.145.68 )
- Ikea - (Komplement) KOMPLEMENT Clothes rail, white, 100 cm ( 302.568.91 )
- Ikea - (Komplement) KOMPLEMENT Shelf, white, 100x58 cm ( 702.779.57 )
- Ikea - (Komplement) KOMPLEMENT Shelf, white, 50x58 cm ( 302.779.59 )
- Ikea - (Komplement) KOMPLEMENT Mesh basket with pull-out rail, white, 50x58 cm ( 590.109.88 )
- Ikea - (Komplement) KOMPLEMENT Clothes rail, white, 50 cm ( 902.568.93 )
- Ikea - (Komplement) KOMPLEMENT Drawer, white, 50x58 cm ( 102.463.08 )
- Ikea Pax - (Pax) Attaching to the wall per set of frames (ie per wardrobe system)
- Ikea Pax - (Pax) Attaching to the wall per set of frames (ie per wardrobe system)
- Ikea Pax - (Pax) Attaching to the wall per set of frames (ie per wardrobe system)
- Ikea - (Pax) PAX 2 wardrobe frames White 200 x 58 x 201 cm ( 598.952.57 )
- Ikea - (Komplement) KOMPLEMENT Shelf, white, 100x58 cm ( 702.779.57 )
- Ikea - (Komplement) KOMPLEMENT Drawer, white, 100x58 cm ( 902.463.52 )
- Ikea - (Komplement) KOMPLEMENT Clothes rail, white, 100 cm ( 302.568.91 )
- Ikea - (Pax) Hasvik Pair Of Sliding Doors High Gloss White ( 291.780.07 ) Aggregate product no (includes panels, frame and soft close device)
- Ikea - (Malm) MALM Desk, white (602.141.59 )
- Ikea - (Billy) BILLY Bookcase, white ( 802.638.32)
- Ikea - (BALESTRAND) BALESTRAND Divan base with drawer, left, Skiftebo greySmall Double ( 704.096.32 )
- Ikea - (Ekedalen) Ekedalen Dark brown/ramna light grey ( 703.411.14 )
- Ikea - (Sundlandet) SUNDLANDET Open wardrobe, white 79x44x187 cm ( 004.219.15 ) inc attachinh to the wall.
Whatever you have purchased we will know how to build it to a high standard and probably have assembled it before.
Local Furniture
Selby is a small town in the East Riding of Yorkshire, England which has a rich history in furniture making. It has been a centre of furniture production since the Middle Ages, and has been home to many large furniture manufacturers, such as John Reardon, G.F. Burrell & Sons, and Robert Herdman & Sons. The style of furniture most popular in Selby and nearby is traditional British furniture. Traditional British furniture is characterised by its classic, timeless look, with clean lines and a strong, sturdy construction. It is often made from high-quality hardwoods such as oak, cherry, walnut or mahogany, and has a natural, rustic charm and a deep, rich patina that develops over time. This style of furniture is perfect for creating a homely, inviting atmosphere, and has been popular in the region for centuries. Traditional British furniture often features classic designs, such as armchairs, sofas, dining tables, and sideboards. These pieces are crafted with great attention to detail, and many feature intricate carvings and detailed ornamentation. They are also often finished with a wax polish to bring out the natural beauty and grain of the wood. Other popular styles of furniture in Selby and nearby include contemporary, modern and shabby chic. These styles are often designed to be lighter and more compact than traditional pieces, and often feature sleek lines and curved edges. They are perfect for those who want to create a more urban, contemporary feel in their home, and are often made from materials such as metal, glass and plastic. Whichever style of furniture you prefer, Selby and the surrounding area offer a wide selection of quality pieces to suit every taste. From traditional to contemporary, there is something to suit every home.
Retailers in and around Selby who we have built furniture from
Argos
Get A Quote
- - Obaby Nika 3 Piece Nursery Furniture Set - Grey Wash and White 945/3579
- - Habitat Aspley Kingsize Wooden Bed Frame - White497/1379
- - Jenson 2 Door Sideboard - Grey 937/4610
- - 1 x Elizabeth Upholstered Double Bed Frame - Grey 929/8387
- - 1 x Atlantic 4 Seater Metal Patio Set651/1548
- - Habitat Atlas 4 Door Wardrobe - Black And Brown206/7663
- - HOME Calgary Corner Office Desk - Whiteby HOME by Argos 462/6930
- - 1 x San Diego Solid Wood Dining Table and 4 Chairs 700/8995
- - Birlea Phoenix Ottoman Kingsize Wooden Bed Frame - Navy - 726/7918
- - 1 x Kentucky Extendable Solid Wood 4 Seater Table 603/8241
- - 1 x HOME Maine 5 Shelf Tall Wide Extra Deep Bookcase - Black 609/3554
- - New Hallingford 2 Dr 3 Drw Mirror Wardrobe-White (232/8450)
The Range
Get A Quote
- - Lexington Two Drawer Bedside Table - Cream Product code: 011495
- - Lexington Sideboard - Grey Product code: 316335
- - 1 x Apollo Coffee Table
- - Luxury Rattan 160cm Sun Island With Cover Product code: M4397250
Jockey Lane Huntington, York North Yorkshire
Next
Get A Quote
- - Bronx Corner Ladder Shelf 550-779
- - 1 x Harbour White by Julian Bowen • Standard Chest 610-503 H74 x W84 x D44
- - Bronx 4 Seater Round Dining Table 307-948
- - Matson Upholstered Frame T23-780
- - 1 x Bronx Tall Display Shelf 178-407-012
- - Matson Ottoman Storage Bed 433-420
- - Logan white gloss double extending table 997-637
- - Jefferson Double Wardrobe 550-583
- - Bronx 4 Seater Round Dining Table 307-948
- - Bronx Oak Effect Chest of Drawers 728-411
- - Malvern 6 Drawer Multi Chest 837-461
- - 1 x Paris Footboard 2 Underbed drawers Double bed with 2 storage drawers
- - Bronx Tall Display Shelf 178-407
- - Bronx Oak Effect Chest of Drawers T85-521
- - 1 x Compton 3 Drawer Pine Chest 451113
- - Oak Effect Bronx Wooden Hotel Bed Frame with Platform Storage and Bedside Tables C24-482
- - Paris Double Bed
- - Plush Chenille Moss Green Bronx Effect Frame Flinton Wooden Accent Chair M63-147
- - Vintaged Faux Leather Light Brown Flinton Wooden High Back Accent Chair K95-601
- - 1 x Cameron 1.81m Sliding Wardrobe By Rauch
UNIT 3A SEAMER ROAD RETAIL PARK SCARBOROUGH NORTH YORKSHIRE
Argos
Get A Quote
- - HOME Seville 3 Door Wardrobe - White. (167/8338)
- - 1 x Kaycie Small Double Bed Frame - Pine 725/6149
- - Reagan Left Corner Faux Leather Sofa Bed - Black 699/7722
- - HOME New Malibu 2 Door 3 Drawer Wardrobe - Beech Effect. (553/2724)
- - New Hallingford 3 Dr 3 Drw Mirrored Wardrobe - Oak Effect. (274/9716)
- - Tulip Marble Effect 4 Seater Dining Table - Black 844/3432
- - 1 x Shenley Extendable Oak Veneer 6 - 8 Seater Dining Tableby HOME by Argos392/2628
- - Skylar Double Bed Frame - Black 125/9953
- - Habitat Kids Brooklyn 2 Drawer Desk - White 814/2166
- - 1 x Office Desk - Beech Effect 617/2516
- - Miami Wood Effect Dining Table and 6 Brown Chairs 454/4098
- - HOME Seville 3 Drawer Chest - White170/2187
- - Minato 6 Drawer Chest - White 363/0996
- - 1 x Brooklyn White Bed Frame with Drawer 703/3393
- - Maine Bookcase - Oak Effect 609/2524
- - HOME Malibu 5 Wide 2 Narrow Drawer Chest - White625/7259
- - GFW Modena Double Lifting Coffee Table - Grey 780/8102
- - HOME Normandy 2 Door Large Wardrobe - White. (357/1505)
- - New Malibu 2 Door Wardrobe - Pink on White. 496/5945
- - 1 x Collection Chicago Solid Wood Table & 4 Chairs - Two Tone 426/9610
- - Heathland 4 Door 2 Drawer Mirror Wardrobe - Grey 916/8802
- - Sleigh 2 Door 1 Drawer TV Unit - Gloss Grey 816/3035
- - Holsted White Large Wardrobe 920/6867
- - 1 x Normandy 3 Door 3 Drawer Large Mirrored Wardrobe - White. (338/3267)
- - Willen Silver Triple Bunk Bed 855/7816
- - Keter Darwin Garden Storage Shed 4 x 6ft 458/8171
- - Maine 4 Shelf 2 Drawer Bookcase - White 609/2555
- - Jenson 3 Drawer Chest - Grey Gloss 849/2218
Bridlington East Riding Of Yorkshire
JYSK
Get A Quote
- - LIMFJORDEN 4 drawer chest LIMFJORDEN white
- - 1 x Wardrobe GENTOFTE 3 doors brushed oak SKU: 3696592
- - Wardrobe VELLERUP 151x200 combi white SKU: 3696674
- - 2 x Bedside table LIMFJORDEN 2 drawers oak SKU: 3618906
Clifton Moor Centre, 1C Stirling Road York
Bensons
Get A Quote
- - Bergen 1 Drawer Bedside Table STK452704
- - Atlas Upholstered Bed Frame STK552211
- - Bergen 4 Drawer Wide Chest of Drawers STK452703
- - Aura Ottoman TV Bed Frame With Dolby Atmos Surround Sound 800120003
Unit 2 Clifton Moor Retail Park Unit 2 Stirling Road York YO30 4XZ
Show MoreOnline Retailers who we have built furniture from in Selby
We assemble throughout North Yorkshire including: Bridlington, Driffield, Filey, Malton, Pickering, Scarborough, Selby, Thirsk, Whitby and York
Flat Pack Amigos provide a service in furniture assembly, furniture repair, and furniture delivery. Their experienced team of professionals can help assemble and install furniture in the home or office, as well as repair any existing furniture in need of repair. They also offer furniture delivery, where their team will deliver the furniture to the customer's home or office. Their team is dedicated to providing a quality service and ensuring customer satisfaction.
Get A Quote
Easy to work with
- Fixed Price Quote
- Quote And Book online
- Pay by CASH or BANK TRANSFER
What our customers say about the assembly of Jungen furniture from JYSK
“I would definitely recommend your services to others.” - Pauline, (21 November 2023 - 5/5 stars)
How We Work
- Tell us exactly what you need assembling
(see What We Need to Know Below) - We email you or display a quote after you have submitted the form
- Book online (or tell us your preferred dates)
- We build your furniture to the highest standard
- You pay us by: Cash or Bank Transfer
- You leave great feedback and testimonials
Find out about our QUALITY and CONSISTENCY or a more detailed overview of how we work below
What our customers say about the assembly of Pax furniture from Ikea
“
What they said:
"
Super quick assembly, friendly person and even took time to explain where I had been going wrong when I tried to assemble myself.
"
” - Sian,
(29 September 2023
- 5/5 stars)
What they said:
" Super quick assembly, friendly person and even took time to explain where I had been going wrong when I tried to assemble myself. "
This video above shows you how to get an automatic quote and book online. Additional videos below show where to find the part nos required.
Get A Quote
What our customers say about the assembly of Denver furniture from Wayfair
“
What they said:
"
I would absolutely recommend your service, thank you so much for being so lovely, efficient, professional and thorough!
"
” - Carina,
(09 March 2023
- 5/5 stars)
What they said:
" I would absolutely recommend your service, thank you so much for being so lovely, efficient, professional and thorough! "
What we need to know
Generally:
Please tell us the supplier, the full product name and a part code if you can
OR
Copy and paste links of each product online.
Specifically:
For these companies our quote engine will autodetect your items and prepare a draft quote for you if you enter the supplier name and the part number for each item you want building.
Argos
Ikea
John Lewis
Next
Very.co.uk
WayFair
Sample Enquiry
“ Hello,
br/>I wonder if you could give me a quote for assembly of the following items from IKEA:
- Bed: https:www.ikea.com/gb/en/p/balestrand-divan-base-with-drawer-left-skiftebo-grey-70409632/
- Wardrobe: https:www.ikea.com/gb/en/p/sundlandet-open-wardrobe-white-00421915/
- Desk: https:www.ikea.com/gb/en/p/malm-desk-white-60214159/
- Bookcase: https:www.ikea.com/gb/en/p/billy-bookcase-white-80263832/
- Chair: https:www.ikea.com/gb/en/p/ekedalen-chair-dark-brown-ramna-light-grey-70341114/
Thank you in advance!
Yours faithfully, ”
What we quoted
“
Thank you for your enquiry, these items will take the following time to assemble:
40 mins - Ikea MALM Desk, white (602.141.59 )
15 mins - Ikea BILLY Bookcase, white ( 802.638.32)
15 mins - Ikea Ekedalen Dark brown/ramna light grey ( 703.411.14 )
80 mins - Ikea 1 x BALESTRAND
Divan base with drawer, left, Skifte....”
Additonal information follows regarding it being a fixed price, how we calculated the costs, how to book etc
More information about furniture in Selby
Flat Pack Amigos has been providing furniture assembly service for over 20 years in Selby. With a team of experienced professionals, the company offers a range of services to help customers with their furniture assembly needs. Flat Pack Amigos offers assembly of flat pack furniture from a variety of popular brands, including Ikea, Argos, B&Q, and more. They have the experience and expertise to assemble any furniture you may have, from simple armchairs to complex dining sets. Their team of experienced professionals will work with you to ensure that your furniture is assembled correctly and with precision. They will work with you to ensure that the assembly is done in the most efficient way possible, so that you can enjoy your furniture in no time. Flat Pack Amigos also offers a range of additional services, such as furniture repair and restoration services. They will take care of any damage that may have occurred during assembly, and can restore your furniture to its original condition if needed. In addition to their furniture assembly service, Flat Pack Amigos also provides a variety of delivery services. They can deliver any furniture to your home, and can even help you move large items such as beds and sofas. Finally, Flat Pack Amigos offers a range of customer service options, such as phone and email support. They are always available to answer any questions or concerns you may have about their services. Overall, Flat Pack Amigos has been providing furniture assembly service in Selby for over 20 years. With experienced professionals, a range of services, and exceptional customer service, they are the go-to company for all your furniture assembly needs.
Quality
Our Standards
We have done everything we can to make our service the best quality it can be.
- Training and Development
- Clear and Transparent Pricing - the price you see is the price you pay
- No Hidden Extras - we do not add on lots of hidden charges
- Attaching to the Wall - clearly explained
- The Job Cycle - so each job is done to the same standard
- Formal Complaints Procedure - should you have any problems
- 12 Month Guarantee
- Testimonials & Feedback
Trained and Experienced
All of our assemblers have been trained to the standards of Flatpack.org.uk and have passed the experience tests to show they are as familiar as anyone can be with the products they are assembling.
Find out more about FlatPack.org.uk by clicking on our badge below
Experienced
Established since 2004, over 17 years assembling furniture.
Skilled
All our assemblers are trained to the highest standards: how components work - relevant British Standards - specialist assembly techniques and working practices.
Knowledgeable
From where to place Nursery Furniture, to key facts on children's loft and bunk beds, to the 12 test for stability of furniture.
Consistent Methods of Work
Standard Methods of Work
From modular wardrobes to bedroom layouts we have methods of work to ensure the best outcome.
i.e
- If you do things in the right order, the job is a lot easier to get right.
Consistency
Each quote, job and follow up is done in the same way so we can be sure we deliver the highest level of service consistently.
What our customers say about the assembly of Malm furniture from Ikea
“
What they said:
"
The fitter was polite and arrived onetime. He did an excellent job and left everything tidy. I would definately recommend. Thankyou.
"
” - Amanda,
(11 November 2025
- 5/5 stars)
What they said:
" The fitter was polite and arrived onetime. He did an excellent job and left everything tidy. I would definately recommend. Thankyou. "
How We Work
- Get a Quote
- Use our online quote engine to get a quote for the furniture you want assembling.
- Book an Appointment
- Use our online automated booking process, or.
- We will then ask you to give us 3 dates when you want us to come.
- We will confirm the appointment we can do within 1 hr (during normal opening hours).
- We do your Job
- We will arrive within your appointment start time (1 hour window ie 2-3pm).
- We will assemble your furniture.
- After the Job
- Our Assembler will close the job down.
- We send you payment details (*) and a link to close the job, provide feedback etc.
- We send you a receipt and our guarantee.
We also assemble furniture in: - - Bubwith - Drax - Brayton - Barlby - Thorpe Willoughby - Camblesforth - Cawood
Feedback
Customer Satisfaction
We send our customer satisfaction survey to everyone who contacts us with an enquiry as part of our commitment to continual improvement (a requirement of BS 5750 / ISO 9000).
If you didn't use us we use the feedback given internally to understand our market, and where necessary modify our business model.
We publish a summary of the results of everyone who uses us, so potential customers can see the great service we offer
What our customers say about the assembly of Denver furniture from Wayfair
“
What they said:
"
Fabulous, professional service from Flat Pack Amigos. From the minute I contacted them for a quote and date to assemble my Ikea wardrobes everything ran smoothly. They were very prompt with the quote, which was very clear and well presented. Sorting a date was quick and easy and they turned up on time on the date agreed. The assembler was polite and well presented, worked quickly and left my room in perfect condition with my wardrobe well put together
I was extremely pleased with the service and would definitely use them again. Thank you for a job well done.
"
” - Carina,
(09 March 2023
- 5/5 stars)
What they said:
" Fabulous, professional service from Flat Pack Amigos. From the minute I contacted them for a quote and date to assemble my Ikea wardrobes everything ran smoothly. They were very prompt with the quote, which was very clear and well presented. Sorting a date was quick and easy and they turned up on time on the date agreed. The assembler was polite and well presented, worked quickly and left my room in perfect condition with my wardrobe well put together I was extremely pleased with the service and would definitely use them again. Thank you for a job well done. "
Just some of the things we have helped people with in Selby:
Just some of the things we have helped people with in Selby:
Some of the other things we have helped people with :
- seo company in north glasgow loc:GB
- furniture assembly service warrington
- bookcase ilva
- https://www.flatpackamigos.co.uk/furniture-assembly/Isle-of-Wight/
- ikea furniture assemblers surrey
- dundee assembly of furniture
- building from flat pack services bolton
- flat pack furniture manufacturers
- ikea assembly service peterborough
- flat pack furniture assembler luton
Providing a furniture assembly service throughout the UK since 2005. We operate in the following towns in North Yorkshire: Bedale, Catterick-Garrison, Filey, Harrogate, Hawes, Knaresborough, Leyburn, Malton, Northallerton, Pickering, Richmond, Ripon, Scarborough, Selby, Settle, Skipton, Tadcaster, Thirsk, Whitby and York
We assemble furniture from all suppliers including: Adorable Tots, Amazon, Andre Victoire, Argos, Asda, Aspace, B and Q, Barker and Stonehouse, Bedstore, Bensons, Bensons for Beds, Corona, Dunelm Mill, E-Bay, Furniture 123, Habitat, Harmony, Home Base, Homebase, Hulsta, Ikea, Izziwotnot, John Lewis, JTF, Julian Bowen, Kiddiecare, Kidspace, Littlewoods, Living It Up, Luxury Express, Made.com, Mamas and Papas, Mothercare, Mrs Flatpack, Nabru, Natural Bed Company, Next, NOT LISTED, Pax, Pine Solutions, Plum, Rauch, Steens, Stompa, Tesco, TP Activity, Very and Worldstores.
Powered by w3.css