Grow progression bar width from right to left - html

Question

I have a progression bar that when I increase the width of it, it goes from left to right . Like 0% it's on the left of my bar and 100% it's the far right of my bar.
I wonder if it's any way that I could make my progress bar "grow" from right to left.Something like "-100%".
This is my html code:
<div class="completion-bar1-wraper">
<div class="completion-bar1"></div>
</div>
And the css:
div.completion-bar1-wraper{
height: 12px;
border: 1px solid #aaa;
border-radius: 7px;
background: #eee;
box-shadow: 0px 0px 5px 0px #C2C2C2 inset;
margin-right: 4%;
margin-left: 3%;
margin-top: 19%;
}
div.completion-bar1{
height: 8px;
margin: 1px;
border-radius: 7px;
background: #cf7400;
width: 70%;
}
I set up a fiddle with my bar too : Progress Bar

Answer 1

You can do it easily with positioning. Set the container to be position: relative;, absolutely position the progress bar and then specify right: 0; to place it against right edge of the container.
div.completion-bar1-wraper {
/*...*/
position: relative;
}
div.completion-bar1 {
/*...*/
width: 70%;
position: absolute;
right: 0;
}
Here is a fiddle.

Answer 2

There's many ways to do this, so to answer your question, yes.
I've forked your code and adjusted css slightly as follows: http://jsfiddle.net/adamfullen/69mJ8/
div.completion-bar1-wraper{
height: 12px;
border: 1px solid #aaa;
border-radius: 7px;
background: #eee;
box-shadow: 0px 0px 5px 0px #C2C2C2 inset;
margin-right: 4%;
margin-left: 3%;
margin-top: 19%;
position: relative;
}
div.completion-bar1{
position: absolute;
right:0;
height: 8px;
margin: 1px;
border-radius: 7px;
background: #cf7400;
width: 70%;
}

Answer 3

Just edit the completion-bar1 to following
div.completion-bar1{
float: right;
height: 8px;
margin: 1px;
border-radius: 7px;
background: #cf7400;
width: 70%;
}