FEATURE REQUEST: Day Borders

[aswormboy]

Add option for borders around days to look more like wall calendar.

[cooper645]

I am doing similar with the Card Mod, you could give it a go and see how you like it, much more customisable.

card_mod:
  style: |
    ha-card {
      background-color: rgba(255, 255, 255, 0.4);  /* blurred glass effect */
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border-radius: 12px;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    }

    .day.today {
      background-color: rgba(170, 240, 193, 0.8) !important;
      color: red;
      border-radius: 12px;
      overflow: hidden;
      padding: 0px;
    }

    .event,
    .event-container,
    .event-wrapper {
      border-radius: 8px !important;              /* round event blocks */
      padding: 2px 4px;
      margin: 2px 0;
      overflow: hidden;
    }