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# 2D Transforms Quiz Question

On the Which of the following will position the transform-origin at the bottom-right corner of an element? why isn't `transform-origin: right bottom;` considered a valid option?

```<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Demo</title>
<style>
html, body {
width: 100%;
height: 100%;
margin: 0;
}

.box {
width: 90%;
height: 90%;
margin: 0 auto;
background-color: #f0f0f0;
}

.inner-box {
background-color: lightblue;
width: 100px;
height: 100px;
transform-origin: right bottom;
transition: transform 1s;
}

.box:hover .inner-box {
transform: rotate(45deg);
}
</style>
</head>
<body>
<div class="box">
<div class="inner-box"></div>
</div>
</body>
</html>
```

changing `transform-origin: right bottom;` to `transform-origin: 100% 100%` gives me the same result on the browser.

## 1 Answer

Because the order should be: bottom right for this answer to be correct.

According to the W3 Specification the value of the transform-origin is defined as:

```[ left | center | right | top | bottom | <percentage> | <length> ]
|
[ left | center | right | <percentage> | <length> ]
[ top | center | bottom | <percentage> | <length> ] <length>?
|
[ center | [ left | right ] ] && [ center | [ top | bottom ] ] <length>?
```

Applying the second rule, `right bottom` is a valid option.

Yeah I know, I just tried in code in Codepen the two combinations "right bottom" and "bottom right" and it seems that both work so now I m also puzzled. I finished this lesson yesterday so I remember that the order int the video is top/bottom left/right.

I've finished it today and was curious why that option wasn't valid, tested the two options (the right bottom and 100% 100%) on my browser and both worked.

So I googled and found the W3 specification page and the Mozzila Developer page and in both the `transform-origin: right bottom` seems to be a valid option.

Lol! I also did the same 'cause you got me thinking. I known that in the video uses the statement transform-origin: top right, but it seems that the order of keywords doesn't affect the result. Plus in the video is stated the first value should be the x-axis so it should be the left or right keyword following this logic.