Step 396

'
<style>
 .chart-wrap {
   margin-left: 50px;
   font-family: sans-serif;
   height: 650px;
   width: 300px;
 }
 .chart-wrap .title {
   font-weight: bold;
   font-size: 1.62em;
   padding: 0.5em 0 1.8em 0;
   text-align: center;
   white-space: nowrap;
 }
 .chart-wrap.vertical .grid {
   transform: translateY(-175px) translateX(175px) rotate(-90deg);
 }
 .chart-wrap.vertical .grid .bar::after {
   transform: translateY(-50%) rotate(45deg);
   display: block;
 }
 .chart-wrap.vertical .grid::before,
 .chart-wrap.vertical .grid::after {
   transform: translateX(-0.2em) rotate(90deg);
 }
 .chart-wrap .grid {
   position: relative;
   padding: 5px 0 5px 0;
   height: 100%;
   width: 100%;
   border-left: 2px solid #aaa;
   background: repeating-linear-gradient(90deg,transparent,transparent 19.5%,rgba(170,170,170,0.7) 20%);
 }
 .chart-wrap .grid::before {
   font-size: 0.8em;
   font-weight: bold;
   content: "0%";
   position: absolute;
   left: -0.5em;
   top: -1.5em;
 }
 .chart-wrap .grid::after {
   font-size: 0.8em;
   font-weight: bold;
   content: "100%";
   position: absolute;
   right: -1.5em;
   top: -1.5em;
 }
 .chart-wrap .bar {
   width: var(--bar-value);
   height: 50px;
   margin: 30px 0;
   background-color: #F16335;
   border-radius: 0 3px 3px 0;
 }
 .chart-wrap .bar:hover {
   opacity: 0.7;
 }
 .chart-wrap .bar::after {
   content: attr(data-name);
   margin-left: 100%;
   padding: 10px;
   display: inline-block;
   white-space: nowrap;
 }
 
 </style>

'+

'

<div class="chart-wrap vertical">
   <h2 class="title">Bar Chart for Cars and Brands</h2>
  
  <div class="grid">
 '+
 Car.allInstances->groupby(c|c.BrandOfCar)->collect(tuple|tuple.BrandOfCar.Name,(100*tuple.List->size/Car.allinstances->size).Round(0).asstring+'%')
 ->collect(values|'<div class="bar" style="--bar-value:'+values.Part2+';" data-name="'+values.Name+'" title="'+values.Name+' '+values.Part2+'"></div>'

)
->asSeparatedList( '' )+
'
  </div>
</div>'

Step

(Exerpt)