* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: #333;
}

section {
  position: relative;
  height: 300px;
  margin: 0 auto;
  background-color: #333;
}

.bar {
  position: absolute;
  bottom: 0;
  width: 50px;
  border: solid thin #333;
  background-color: aqua;
  transition: all .5s;
}

.bar p {
  position: absolute;
  top: -30px;
  left: 50%;
  transform: translateX(-50%);
  color: #f7f7f7;
  padding-top: 3px;
}

h1 {
  padding-top: 10px;
  color: #f7f7f7;
  text-align: center;
}