math-keyboard.component.css

.delete-characters{
  font-size: x-large;
  width: 85px;
  height: 40px;
  border-radius: 20px;
  background-color: dimgray;
  color: #fff;
}

.clear-button-container{
  margin-left: 45px;
}

.grid-layout {
  margin-top: 15px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr 1fr;
}