/* ~/.jupyter/custom/custom.css */
#header {
    background-color: red;
    color: white;
    font-size: 18px;
    padding: 10px;
}
.lm-Widget .lm-TabPanel .jp-TreePanel
{
background-color: red;
}

#header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}


#custom-sidebar h3 {
  margin-top: 0;
  font-size: 18px;
}

#custom-sidebar li {
  padding: 4px;
  margin: 2px 0;
}

#custom-sidebar li:hover {
  background: #ddd;
}