The Firefox Grid Inspector, July 2017 edition

I’m working on a lot of different projects these days, but one of my favorites is the Firefox CSS Grid Inspector.

I first started learning CSS Grid without a tool for seeing what’s going on. It can be tough to understand why things aren’t working they way you expect. Grid is much easier to learn when you can see the lines. We shipped the original version over a year ago, as an Add-on for Firefox.

As an extension, CSS Grid Inspector “version 0” was limited in what it could do. It didn’t always line up with where it should have. (To make a tool that works accurately in all use-cases, especially crazy edge-cases, it needs to be directly integrated with the browser’s rendering engine. No extension can do that.)

Really, the main job of the Firefox Grid Inspector version 0 was to prove that such a tool is useful and would be popular. And it did so very successfully. Along the way, we gathered lots of feedback from designers and developers who were also learning Grid — thank you to everyone who chimed in, especially Eric Meyer and the CSS Layout Club NYC. This tool is much better because of you.

That early experience gave us the momentum to ship version 1, baked straight into the Firefox Dev Tools, in the first week of March 2017. We were proud to ship developer tools when we shipped CSS Grid itself, on day one. Our CSS rendering engine team created an API for Grid, to which our Dev Tools team connected the new tools. And we got it into your hands, so you could use it to learn and to code layouts with this amazing new specification, CSS Grid.

Firefox Grid Inspector version 1 offers one thing — the ability to see your grid lines. It’s the tool you’ll find in the regular version of Firefox today.

Since March, a ever-growing cross-department team has been working hard on version 2. They declared it finished-enough to ship in Firefox Nightly (without a flag) in late June. I’m excited to finally be able to show it to you. We’ve added a lot.

Watch this video for a 10-minute introduction into how the mid-July version of the Firefox Grid Inspector works, and how you can use it to write layout CSS.

Download Firefox Nightly (if you don’t have it already) to get access to the latest and greatest. In fact, things are moving so fast, this video is already slightly out of date. (“Display grid areas” has been renamed “Display area names”, and the list of options has been reordered.) Things will keep changing. The regular version of Firefox will get these tools sometime in the future. Meanwhile, Nightly will continue to be the best place to learn and code CSS Grid.

Let me know what you think. Feedback is definitely wanted. Which tools are the most helpful? Which parts are confusing? Or simply not very helpful?

Not many people have a lot of experience with Grid, and getting real feedback from real developers and designers can have a strong effect. We need to hear from you.


Thank you for this excellent video! I’m kind of a die-hard FF user, so I’m so glad (validated, if I’m being honest) to hear about these new developments.

Thank you so much Jen! I’m in love with the new CSS Grids, and constantly blown away when I see grids in use. These kinds of simple explanations and and tools are exactly what we need!

Get your ex lover back and save your marriage now. Contact: , Is certainly the best spell caster online, and his result is 100% guarantee!!. I’m so excited my boyfriend is back after he left me for another Girl. After 4 years of relationship with my boyfriend, he broke up me and brought in another Girl, i did all i could to get him back but all proved abortive, I was really upset and i needed help, so i searched for help online and I came across a website that suggested that Dr Unity can help get ex back fast. So, I felt I should give him a try. I contacted him and he told me what to do and i did it then he did a (Love spell) for me. 28 hours later, my boyfriend really called me and told me that he miss me so much, So Amazing!! So that was how he came back that same day,with lots of love and joy,and he apologized for his mistake, and for the pain he caused me . Then from that day, Our relationship was now stronger than how it were before, All thanks to Dr Unity. he is so powerful and i decided to share my story on the internet that Dr.Unity real and powerful spell caster who i will always pray to live long to help his children in the time of trouble, if you are here and you need your Ex back or your husband moved to another woman, do not cry anymore, contact this powerful spell caster now. Here’s his contact: Email him at: ,
you can also call him or add him on Whats-app: +2348071622464 ,
you can also visit his website:

This is my testimony about the good work of a man who helped me..My name is MARY PINO. and I am based in NEW YORK , USA. My life is back!!! After 8 years of marriage, my husband left me with our three children. I felt like my life was about to end,and was falling apart. Thanks to a spell caster called papa Adisa Akuchi who i met online. On one faithful day, as I was browsing through the internet, I was searching for a good spell caster that can solve my problems. I came across series of testimonies about this particular spell caster. Some people testified that he brought their Ex lover back, some testified that he restores womb, some testified that he can cast a spell to stop divorce and so on. There was one particular testimony I saw, it was about a woman called Rose Cardina, she testified about how papa Adisa brought back her Ex lover in less than 72 hours and at the end of her testimony she drop papa Adisa e-mail address. After reading all these,I decided to give papa a try.

I contacted him via email and explained my problems to him. In just 3 days, my husband came back to me. We solved our issues, and we are even happier than before. papa Adisa is really a talented and gifted man and i will not stop publishing him because he is a wonderful man If you have a problem and you are looking for a real and genuine spell caster to solve that problem for you. Try the great papa Adisa today, he might be the answer to your problems. Heres his contact:
Thank you great Adisa. Contact him for the following:

(1)If you want your ex back.
(2) if you always have bad dreams.
(3)You want to be promoted in your office.
(4)You want women/men to run after you.
(5)If you want a child.
(6)[You want to be rich.
(7)You want to tie your husband/wife to be yours forever.
(8)If you need financial assistance.
(9)Herbal care
10)Help bringing people out of prison
(11)Marriage Spells
(12)Miracle Spells
(13)Beauty Spells
(15)Attraction Spells
(16)Evil Eye Spells
(17)Kissing Spell
(18)Remove Sickness Spells
(21) Charm to get who to love you.
(22)Business spell.
(23) Find your long lost family.

Email him at:
Whats-app him at: +2347056677283

I know these may not be important here but some of us need this Advice.
I want to offer a bit of advice to anyone looking to find help on saving their marriage/relationship. Me and my husband had a torrid time for a whole decade; all our family & friends constantly advising us to get a divorce but i knew it would break our children’s heart. i tried so many different things to save our marriage and from trial & error i came across a very helpful Advice from George, he talks about a love Dr and how is has being saving so many Relationships so i click on the website address he wrote out and contacted the love Dr , that worked extremely well for me, so i am also writing out his and Email to those who as well needs help about your Relationship and for some other reasons whatsApp him on: +2348100368288
And now we are happily together with no more problems
you can contact him directly via his Email:

Good day everyone, I’m here to share my unexpected miracle that had happened to me through the help of Dr. Todd. I was happily married with two kids; we lived together as one because we both loved each other. All of a sudden, my husband started acting funny and started keeping late night. I took out time to know what was actually going on and realized that he was cheating on me. Later on, he told me that he cannot continue with me, I even pleaded with him but he never listened. The worst part of it was that he left me and my two kids with noting to hold on to. But there was nothing I could do to stop him or bring him back to me. I work so hard to pay the kids school fees and other responsibilities for good three years. I cry all day and night because I didn’t know what to do to have my husband back to me until this fateful day I read the post from one Mrs. Victoria testifying how the great spell caster helped her to get her ex back. I just wanted to try my luck because I never believe it will work but I said let me give it a try. I contacted the great spell caster and he told me not to worry that my husband will return to me in no distance time after he must have finished casting the spell, which I will get back my husband. The unbelievable happened on Sunday when I got a call and I was so surprised to hear my husbands voice apologizing to me that he is so sorry for all his Wrong did, telling me he is coming back home to fix all the pains and hardship he brought upon me. Wow! I really appreciated the great work of Dr. Todd. I will always acknowledge your “FABULOUS WORKS” and there is nothing I could say than to tell the whole world about my miracle. So, if anyone is out there reading this post and you have similar issue like this, worry no more Dr. Todd is there for you, he can also offer any type of
help like Reuniting of marriage and relationship, Curing of genital herpes and all types of Diseases, Court Cases, Pregnancy Spell, Spiritual protection and lot’s more. E-mail:

My girlfriend and I were happy as far I could tell and I never thought that we would break up. When her cousin died in a tragic car accident she went to her family in Mexico for a week. I couldnt go because I was in the middle of entertaining out of town clients for work. She did not seem to be upset that I could not go so I let her be. The next thing I knew, she reconnected with an old friend from high school that she had a crush on years back and they started to have an affair! I had no clue what was going on until she came back from Mexico. She proceeded to see this old friend and I caught her and her old friend one night hugging each other. I confronted her and she told me the truth about what happened. We broke up and went our separate ways. Neither of us fought for our relationship. I was angry and decided not to be upset about it and just keep it moving. Then after about few months of no contact with her I became sad. I wanted her to tell me she wanted to be with me and not her old friend. I contacted Dr.bante for a love spell and he truly helped me! he was able to get her to miss me she wanted us to get back together again. She had lot of regrets and felt bad for not fighting to keep me and for cheating in generally. she cherish our relationship so much more now and we are together now! You can also get your lover back with the help of Dr.bante reach him on email: add him on whatsapp on +2347059073543

I read some testimonies about a love spell caster by Dr. OCUSODO on how he has helped lots of people in bringing back their ex lovers within 48hours, Sincerely I was just thinking if that was real and if this man could really help bring back my lover whom I love so much. I decided to contact him because I love my boyfriend very much and we have been apart for a couple of months I really missed him so much, I have tried all other means to get him back but couldn’t contacted Dr. OCUSODO and he told me that my ex will come back to me in the next 48 hours,Dr. OCUSODO released him up to know how much i loved and wanted him. And opened his eyes to picture how much we have share together. My ex is now back to me again.As I`m writing this testimony right now I`m the most happiest girl on earth and me and my boyfriend is living a happy life and our love is now stronger than how it were even before our break up.All thanks goes to Dr. OCUSODO for the excessive work that he has done for me by helping me to get back with my ex boyfriend. I would like to drop Dr. OCUSODO mail address and hope you see this testimony and contact him if you have a lover that you really want back so badly, His mail: or website:

whats-app Or call number::: +2349067457724

I want to let the world know about Doctor Bakaba the Great spell caster that brought back my husband to me when i thought all hope was lost. Doctor Bakaba used his powerful spell to put a smile on my face by bringing back my man with his spell, at first i thought i was dreaming when my husband came back to me on his knees begging me to forgive him and accept him back and even since then he loves me more than i ever expected so i made a vow to my self the i will let the World know about Doctor Bakaba because he is a God on earth. Do you have problems in your relationship ? have your partner broke up with you and you still love and want him back ? Do you have problem with your finance ? or do you need help of any kind then contact Doctor Bakaba today for i give you 100% guarantee that he will help you just as he helped me. Doctor Bakaba email is: or contact directly from whasapp+2349060961651

Add new comment

By submitting this form, you accept the Mollom privacy policy.