style.css

body {
  font: 16px sans-serif;
}

#table {
  margin: 100px;
  padding: 25px 0;
  position: relative;
}

.task {
  height: 20px;
  line-height: 20px;
  margin: 10px 0;
  position: relative;
}

.name {
  margin-right: 25px;
  position: absolute;
  right: 100%;
  text-align: right;
}

#labels {
  display: flex;
  position: absolute;
  left: 0px;
  right: 0px;
  top: 0px;
  bottom: 0px;
}

.column {
  flex: 1;
  height: 100%;
}

.line {
  height: 100%;
  border-left: 1px solid black;
  border-bottom: 1px solid black;
}

.label {
  padding-top: 10px;
  padding-left: 5px;
  border-left: 1px solid black;
}

#axis {
  position: absolute;
  top: 100%;
  width: 100px;
  padding-top: 11px;
}

.job {
  box-sizing: border-box;
  height: 100%;
  border: 1px solid black;
  position: absolute;
}