#overlay
{
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}
.logo-container
{
    text-align: center;
    margin-bottom: 10px;
}
.logo-container img
{
    max-height: 50px;
}
.logo-container h1
{
    font-size: 24px;
    margin: 10px 0;
}
.logo-container hr
{
    border: none;
    border-top: 2px solid #ccc;
    width: 100%;
}

.btn-fixed-width
{
   width: 100px;
}

#calendar
{
  max-width: 700px;
  margin: 10px auto;
}

.green-cell
{
    background-color: lightgreen !important;
    position: relative;
}
.red-cell
{
    background-color: red !important;
    position: relative;
}

.fc-daygrid-day-number,
.fc-col-header-cell a,
.fc-day a {
    color: inherit !important;
    text-decoration: none !important;
}