spacedeck-open/styles/layout.scss

#layout {
  #align {
    .btn-group {
      height: 120px;
      width: 180px;
      position: relative;
      .btn {
        position: absolute;
        display: inline-block;

        &.top    { top:    0px; left: 50%; margin-left: -30px; }
        &.bottom { bottom: 0px; left: 50%; margin-left: -30px; }
        &.left   { left:   0px; top:  50%; margin-top:  -30px; }
        &.right  { right:  0px; top:  50%; margin-top:  -30px; }
      }
    }
  }
}