Rortated headers 45degrees

gistfile1.sass

&.rotated{
      tr{
        & th:first-child div{
          width: 100%;
        }
        background: transparent;
        height: 80px;
        &.ie{
          background: lighten($body_text_color, 60%);
          height: 20px;
          & div{
            height: 100px;
            font-size:11px;
            -ms-filter: "progid:DXImageTransform.Microsoft.Matrix(SizingMethod='auto expand', M11=0.7071067811865476, M12=-0.7071067811865475, M21=0.7071067811865475, M22=0.7071067811865476)"; /* IE8 */
            left: 0px;
            border-right: 0px solid;
          }
          & span{
            -ms-filter: "progid:DXImageTransform.Microsoft.Matrix(SizingMethod='auto expand', M11=0.7071067811865476, M12=0.7071067811865475, M21=-0.7071067811865475, M22=0.7071067811865476)"; /* IE8 */
            bottom: 60px;
            left: 0;
          }
        }
        & th{
          height: 3.7em;
          vertical-align: bottom;
          & td{
            padding: 0 0 0 0;
          }
          & div{
            position: relative;
            width: 3.5em;
            font-size: 12px;
            line-height: 0.8;
            -ms-transform:skew(-45deg,0deg);
            -moz-transform:skew(-45deg,0deg);
            -webkit-transform:skew(-45deg,0deg);
            -o-transform:skew(-45deg,0deg);
            transform:skew(-45deg,0deg);
            top: 0px;
            height: 100%;
            left: 30px;
            border-left: 1px solid;
            border-right: 1px solid;
            border-top: 1px solid;
            background:#EEEFEF;
            & span{
              -ms-transform:skew(45deg,0deg) rotate(315deg);
              -moz-transform:skew(45deg,0deg) rotate(315deg);
              -webkit-transform:skew(45deg,0deg) rotate(315deg);
              -o-transform:skew(45deg,0deg) rotate(315deg);
              transform:skew(45deg,0deg) rotate(315deg);
              position: absolute;
              bottom: 30px; /* 40 cos(45) = 28 with an additional 2px margin*/
              left: -25px; /*Because it looked good, but there is probably a mathematical link here as well*/
              display: inline-block;
              line-height: 1.1;
              // width: 100%;
              width: 85px; /* 80 / cos(45) - 40 cos (45) = 85 where 80 is the height of the cell, 40 the width of the cell and 45 the transform angle*/
              text-align: left;
              // white-space: nowrap; /*whether to display in one line or not*/
            }
          }
        }
      }

    }