*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body{
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #e5eaf1;
}

.textBar{
  width: 320px;
  height: 6rem;
  margin-top: 30px;
  border: 2.5px solid grey;
  margin-top: 0;
  background-color: #e7e4e4;
  font-size: 2rem;
  border-top-left-radius: 4px;
  border-top-right-radius: 4px;
  padding-left:0.9rem;
}

.calculator{
  color: rgb(182, 180, 180);
  text-align: right;
  background-color: #333;
  border-radius: 4px;
}

.buttons{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 70px;
  padding-right: 1rem;
  padding-left: 1rem;

  padding-bottom: 1rem;
}

button{
  height: 60px;
  width: 60px;
  border-radius: 50%;
  border: none;
  font-size: 20px;
  background-color: #333;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

button:hover{
  opacity: 0.8;
}

.orange{
  background-color: #f39c12;
}

.gray{
  background-color: #a5a5a5;
  color: #000;
}