title: Adding a border around selected day in Fullcalendar
body: <p>I'm using FullCalender and would like to change the styling in my month and week views so that rather than a yellow shade for the selected day, there is instead a thick border around it.</p>
  
  <p>I've tried </p>
  
  <pre><code>.fc-state-highlight, .fc-unthemed .fc-today {
      background-color: white;
      border: 3px solid #f26122;
  }
  </code></pre>
  
  <p>but this just draws a border around the top and left of the table cell:</p>
  
  <p><img src="https://i.stack.imgur.com/YGbCz.png" alt="enter image description here"></p>