:art: adjusting base size for proportion calc

vue-theme/src/components/card.vue

         margin: 0
     h1
         font-size: $ms-1
-        padding: $ms--5 0 $ms--3 0
+        padding: $ms--5 0
     p
         &.datetime
             font-size: $ms--1
             -webkit-line-clamp: 4
             -webkit-box-orient: vertical
             overflow: hidden
+            margin: 0 0 $ms--2 0
 
     
 /* for widths larger than 768px */

vue-theme/src/sss/variables.sss

 $path: 4px
 
 /* Proportion */
-$base: 1.0em
+$base: 0.95em
 
 $ratio: $minor-third
 /* $ratio = 1.2 from _ratios.sss */