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How do you align 270deg rotated text to top left?

This should be a very simple problem you would think. I have a box with some title text that I want to rotate -90 degrees. I would like it to be absolutely positioned so that the end of the word is nudged into the top left corner. I can get this to align to the bottom easily enough, but the problem is that with variable length text it seems impossible to have 开发者_StackOverflowit consistently stay within the container when aligning to the top because things like {top: 0} operate on the title before the transform. For my purposes this only needs work in Firefox. I can use javascript if that is the only solution, but you would think this could be done with just CSS.


You should use transform-origin to adjust the transformation point, along with some creative use of positioning properties.

http://jsfiddle.net/thirtydot/JxEfs/1/

CSS:

#box {
    padding: 30px;
    position: relative;
    border: 1px solid blue;
}
#box > div {
    border: 1px solid red;
    position: absolute;
    top: 0;
    right: 100%;
    white-space: nowrap;

    -webkit-transform: rotate(270deg);
    -webkit-transform-origin: right top;
    -moz-transform: rotate(270deg);
    -moz-transform-origin: right top;
    -ms-transform: rotate(270deg);
    -ms-transform-origin: right top;
    -o-transform: rotate(270deg);
    -o-transform-origin: right top;
    transform: rotate(270deg);
    transform-origin: right top;
}

HTML:

<div id="box">
    hello
    <div>rotated!</div>
</div>


Can also work without right:100% Just rotate 270 deg around left top and then translate it back at new 100% width.

transform: rotate(-90deg) translate(-100%, 0);
transform-origin: 0 0;

http://jsfiddle.net/zW7SP/

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