.vt-window-material {
    background: white;
    border-radius: 2px 2px 0 0;
  }
  .vt-window-material.virtual {
    box-shadow: 0px 5px 20px rgba(0, 0, 0, 0.2);
  }
  .vt-window-material.virtual.focus {
    box-shadow: 0 9px 46px 8px rgba(0, 0, 0, 0.14),
      0 11px 15px -7px rgba(0, 0, 0, 0.12), 0 24px 38px 3px rgba(0, 0, 0, 0.2);
  }
  .vt-window-material.windowed {
    
  }
  .vt-window-material.windowed [name='header'] {
    
  }
  .vt-window-material.windowed [name='controls'] {
    
  }
  .vt-window-material.minimized {
    
  }
  .vt-window-material.minimized [name='popout'],
  .vt-window-material.minimized [name='maximize'],
  .vt-window-material.minimized [name='close'] {
    
  }
  .vt-window-material.minimized [name='body'],
  .vt-window-material.minimized [name='footer'] {
    
  }
  .vt-window-material.maximized {
   
  }
  .vt-window-material.maximized [name='body'] {
    
  }
  .vt-window-material [name='header'] {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    background-color: #2e4b59;
    color: black;
    cursor: move;
    cursor: -webkit-grab;
    cursor: grab;
    /* height: 22px; */
    opacity: 0.66;
  }
  .vt-window-material.focus [name='header'] {
    opacity: 1;
  }
  .vt-window-material [name='title'] {
    color: white;
    font-weight: bold;
    text-align: center;
    /* -webkit-box-flex: 1;
    -webkit-flex-grow: 1;
    -ms-flex-positive: 1;
    flex-grow: 1; */
    /* line-height: 22px; */
    margin: 0 10px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .vt-window-material [name='controls'] button {
    /* width: 21px; */
    /* height: 21px; */
  }
  .vt-window-material [name='grab'] {
    /* cursor: nwse-resize;
    position: absolute;
    bottom: 0;
    right: 0;
    width: 16px;
    height: 16px;
    line-height: 16px;
    text-align: center; */
  }
  .vt-window-material [name='grab']:after {
    /* position: abosolute;
    display: block;
    -webkit-transform: rotate(-45deg);
    -ms-transform: rotate(-45deg);
    transform: rotate(-45deg);
    content: '...'; */
  }
  .vt-window-material [name='body'] {
    /* position: relative;
    -webkit-box-flex: 1;
    -webkit-flex-grow: 1;
    -ms-flex-positive: 1;
    flex-grow: 1;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex; */
  }
  .vt-window-material.drag {
    /* will-change: top, left, width, height, transform; */
  }
  
  .vt-window-material.low-end.drag {
    /* box-shadow: none !important;
    border: 1px solid gray; */
  }
  
  .vt-window-material.low-end.drag {
    /* display: none; */
    /* transition: all 500ms linear; */
  }
  
  /* fix issued with iframes */
  .vt-window-material:not(.focus) iframe {
    /* pointer-events: none; */
  }
  .vt-window-material.drag [name='body'] {
    /* pointer-events: none; */
  }