CSS transform 3d cube offsets

Question

I am trying to use CSS 3D transforms to display cubes and cuboids which will contain cross-sections. I am targeting Chrome, Firefox and MSIE 11. I have found that to maintain MSIE 11 compatibility, I need to avoid using transform-type: preserve-3d, as this is not supported by Microsoft, so I need to apply all parent and child transforms to each cube face.

For a cube, I can rotate each side to align them correctly, but for a cuboid, the ends are offset - why is this, and how can I fix it?

This screenshot illustrates the problem:

Here is the HTML:

<div class="test test1">
    <h1>1.</h1>
    <div class="cube">
        <div class="side front">1</div>
        <div class="side back">6</div>
        <div class="side right">4</div>
        <div class="side left">3</div>
        <div class="side top">5</div>
        <div class="side bottom">2</div>
    </div>
</div>

<div class="test test2">
    <h1>2.</h1>
    <div class="cube cuboid">
        <div class="side front">1</div>
        <div class="side back">6</div>
        <div class="side right">4</div>
        <div class="side left">3</div>
        <div class="side top">5</div>
        <div class="side bottom">2</div>
    </div>
</div>

and here is the CSS:

    div.test {
        height: 200px;
    }

    /* basic cube */
    .cube {
        font-size: 4em;
        width: 500px;
        margin: auto;
        /* MSIE11 does not support preserve-3d.
          for MSIE all transforms must be applied to all elements */
    }

    .side {
        position: absolute;
        width: 100px;
        height: 100px;
        background: rgba(255,0,0,0.3);
        border: 1px solid black;
        color: white;
        text-align: center;
        line-height: 100px;
    }
    /* for MSIE11 compatibility, avoid using a transform on the parent, combine all parent+child transforms, transform-style: preserve3d is not supported */
    .front {
        transform: rotateX(-40deg) rotateY(32deg) translateZ(50px);
        z-index: 1000;
    }
    .top {
        transform: rotateX(-40deg) rotateY(32deg) rotateX(90deg) translateZ(50px);
        z-index: 1000;
    }
    .right {
        transform: rotateX(-40deg) rotateY(32deg) rotateY(90deg) translateZ(50px);
    }
    .left {
        transform: rotateX(-40deg) rotateY(32deg) rotateY(-90deg) translateZ(50px);
        z-index: 1000;
    }
    .bottom {
        transform: rotateX(-40deg) rotateY(32deg) rotateX(-90deg) translateZ(50px);
    }
    .back {
        transform: rotateX(-40deg) rotateY(-148deg) translateZ(50px);
    }

    /* cuboid - 100 x 100 x 200 */
    .cuboid .front {
        width: 200px;
    }
    .cuboid .top {
        width: 200px;
    }
    .cuboid .right {
        transform: rotateX(-40deg) rotateY(122deg) translateZ(150px);
    }
    .cuboid .back {
        width: 200px;
    }
    .cuboid .bottom {
        width: 200px;
    }

Here is a JSFiddle of this code: https://jsfiddle.net/6h7mmtgn/

Thanks for any suggestions.

Answer 1

.cuboid .left,
.cuboid .right {
     margin-top: 16px;
     margin-left: 7px;
}

Demonstration below:

div.test {
    xwidth: 100%;
    xperspective: 750px;
    height: 200px;
}
/* basic cube */
 .cube {
    font-size: 4em;
    width: 500px;
    margin: auto;
    /* MSIE11 does not support preserve-3d.
			  for MSIE all transforms must be applied to all elements */
}
.side {
    position: absolute;
    width: 100px;
    height: 100px;
    background: rgba(255, 0, 0, 0.3);
    border: 1px solid black;
    color: white;
    text-align: center;
    line-height: 100px;
}
/* for MSIE11 compatibility, avoid using a transform on the parent, combine all parent+child transforms, transform-style: preserve3d is not supported */
 .front {
    transform: rotateX(-40deg) rotateY(32deg) translateZ(50px);
    z-index: 1000;
}
.top {
    transform: rotateX(-40deg) rotateY(32deg) rotateX(90deg) translateZ(50px);
    z-index: 1000;
}
.right {
    transform: rotateX(-40deg) rotateY(32deg) rotateY(90deg) translateZ(50px);
}
.left {
    transform: rotateX(-40deg) rotateY(32deg) rotateY(-90deg) translateZ(50px);
    z-index: 1000;
}
.bottom {
    transform: rotateX(-40deg) rotateY(32deg) rotateX(-90deg) translateZ(50px);
}
.back {
    transform: rotateX(-40deg) rotateY(-148deg) translateZ(50px);
}
/* cuboid - 100 x 100 x 200 */
 .cuboid .front {
    width: 200px;
}
.cuboid .top {
    width: 200px;
}
.cuboid .right {
    transform: rotateX(-40deg) rotateY(122deg) translateZ(150px);
}
.cuboid .back {
    width: 200px;
}
.cuboid .bottom {
    width: 200px;
}
.cuboid .left, .cuboid .right {
    margin-top: 16px;
    margin-left: 7px;
}

<div class="test test1">
    <h1>1.</h1>
    <div class="cube">
        <div class="side front">1</div>
        <div class="side back">6</div>
        <div class="side right">4</div>
        <div class="side left">3</div>
        <div class="side top">5</div>
        <div class="side bottom">2</div>
    </div>
</div>
<div class="test test2">
    <h1>2.</h1>
    <div class="cube cuboid">
        <div class="side front">1</div>
        <div class="side back">6</div>
        <div class="side right">4</div>
        <div class="side left">3</div>
        <div class="side top">5</div>
        <div class="side bottom">2</div>
    </div>
</div>

View on JSFiddle

Answer 2

I think its about the transform-origin. Try to set explicit origins on your sides like:

transform-origin: 51px 51px;