Repositioning Excerpt Item in List Summary Block

Basic idea would be like this, you can further play with the styles. 

.fe-block-53a098b9fb8dd2261803 {
  counter-reset: section;
}

.fe-block-53a098b9fb8dd2261803 .summary-item {
display: flex;
}

.fe-block-53a098b9fb8dd2261803 .summary-item:before {
  counter-increment: section; 
  content: counter(section) ".";
  
  line-height: 1;
  color: var(--headingLargeColor);
  font-family: var(--heading-font-font-family);
    font-style: var(--heading-font-font-style);
    font-weight: var(--heading-font-font-weight);
      font-size: 22px;
      margin-right: 12px;
      position: relative;
      top: -4px;  
}