<div class="chart">
 <div class="bar-45"></div>
  <div class="bar-100"></div>
  <div class="bar-63"></div>
  <div class="bar-11"></div>
  <div class="bar-46"></div>
  <div class="bar-88"></div>
  <div class="bar-35"></div>
  <div class="bar-11"></div>
  <div class="bar-78"></div>
  <div class="bar-91"></div>
  <div class="bar-55"></div>
  <div class="bar-16"></div>
</div>

$gap: 5px;
$totalRows: 101;

body {
  margin: 0px;
}

.chart {
  width: 70%;
  height: 100vh;
  margin: 0 auto;
  display: flex;
  padding: $gap;
  box-sizing: border-box;
  align-items: flex-end;
}

[class*="bar"] {
  background-color: #ff4136;
  flex-grow: 1;
  margin-right: $gap;
  border-radius: 5px;
}

[class*="bar"]:last-of-type {
  margin-right: 0px;
}

[class*="bar"]:nth-child(even) {
  background-color: #0074d9;
}

@for $i from 1 through $totalRows {
  .bar-#{$i} {
    height: $i * 1%;
  }
}