* {
  position: relative;
}

body {
  font-size: 1.5em;
  font-family: sans-serif;
}
#demo {
  outline: 1px solid black;
  width: 600px;
  height: 600px;
  overflow: hidden;
}

.line {
  position: absolute;
  width: 1px;
  height: 600px;
  left: 300px;
  background: black;
}

.boxWrapper {
  top: 250px;
  display: flex;
  column-gap: 3px;
  width: fit-content;
}

.box {
  font-size: 20px;
  font-weight: bold;
  color: #b6e1ff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 100px;
  height: 100px;
  background: dodgerblue;
  border-radius: 10px;
}

.boxWrapper,
.line {
  pointer-events: none;
}

.box path {
  fill: white;
}

.box svg {
  transform: scale(0.8);
  /* border:1px solid red; */
}