Cant submit solution

HTML-CSS
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I can’t submit my solutions, what’s the problem?
I am new to programming, the problem is in CSS grids, cant submit answers, when hit the button- nothing happens. (can’t paste the link niether here) any hint?

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I’m getting
Error: Request errror: 0

Error: Request errror: 0

when submitting answers, even with previously passed lessons! why is that? what should i do?

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code is as below, cant submit this, get
Error: Request errror: 0

Error: Request errror: 0

(CSS grid)(I tried, but cant include link)

.item1{background:LightSkyBlue;} .item2{background:LightSalmon;} .item3{background:PaleTurquoise;} .item4{background:LightPink;} .item5 { background: PaleGreen; /* add your code below this line */ grid-area: 3/1/4/4; /* add your code above this line */ } .container { font-size: 40px; min-height: 300px; width: 100%; background: LightGray; display: grid; grid-template-columns: 1fr 1fr 1fr; grid-template-rows: 1fr 1fr 1fr; grid-gap: 10px; }
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It is this challenge right?

It works for me right now at least, maybe it was just a temporary issue? The Request error makes it sound like a connection problem of sorts. If it still persists try logging out and back in.