Im using the custom digital clock card, need help with spacing

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Im using GitHub - wassy92x/lovelace-digital-clock: A custom digital clock card for Home Assistant and trying to get a 2 spaces between the time and date, here’s what I have so far:

type: custom:digital-clock
card_mod:
  style: |
    ha-card {
    background: none;
    font-size: 2rem;
    font-family: sans-serif;
    text-align: center;
    }
    span.first-line {
      font-weight: bold;
      line-height: 0.75; 
    }
firstLineFormat: h:mm ccc d LLLL
secondLineFormat: ""

The extra space needs to be between the ‘mm’ and ‘ccc’ in the firstLineFormat line, Ive tried   and looked up coding in Loxon but having problems, any ideas please.