Can't move animation image vertical correct with #keyframe - html

Question

I using a vertical sprite sheet in an animation with #keyframe.
I just can't get it to work correctly.
body{
background: brown;
}
.hi {
width: 117px;
height: 180px;
background-image: url("http://i.imgur.com/DxApxaV.png");
-webkit-animation: play .9s steps(8) infinite;
-moz-animation: play .9s steps(8) infinite;
-ms-animation: play .9s steps(8) infinite;
-o-animation: play .9s steps(8) infinite;
animation: play .9s steps(8) infinite;
}
#keyframes play {
from { background-position:0px; }
to { background-position:0px 1080px; }
}
<div class="hi"></div>
I tried using #keyframe with background-position-y axis to no avail.
It should be animation at 1 frame.

Answer 1

You just needed to change the steps to 6.
Basically speaking, steps is the number of sprites you are wanting to show over X time. So in this case, you only have 6, not 9.
I also changed it to use background-position.y.. note that having background-position: 0 0; is also good practice for when you come across more complex, grid sprite sheets.
body{
background: brown;
}
.hi {
width: 117px;
height: 180px;
background-image: url("http://i.imgur.com/DxApxaV.png");
background-position: 0 0;
-webkit-animation: play .9s steps(6) infinite;
-moz-animation: play .9s steps(6) infinite;
-ms-animation: play .9s steps(6) infinite;
-o-animation: play .9s steps(6) infinite;
animation: play .9s steps(6) infinite;
}
#keyframes play {
from { background-position-y:0px; }
to { background-position-y:1080px; }
}
<div class="hi"></div>