* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
  font-family: "Poppins", sans-serif;
  color: white;
}

body {
  display: grid;
  height: 100vh;
  width: 100vw;
  background: linear-gradient(90deg, #223328 0%, #40b782 100%);
  align-items: center;
  justify-content: center;
}

button {
  background: none;
  border: none;
  font-size: 1.5rem;
}

button:hover {
  cursor: pointer;
}

.main-container {
  display: grid;
  background-color: black;
  grid-template-columns: repeat(4, 100px);
  grid-template-rows: minmax(120px, auto);
  height: 50%;
  min-height: 500px;
  min-width: 300px;
  grid-auto-rows: 1fr;
  grid-template-areas:
    "result-box result-box result-box result-box"
    "ac-del-box ac-del-box ac-del-box operators-box"
    "numbers-box numbers-box numbers-box operators-box"
    "numbers-box numbers-box numbers-box operators-box"
    "numbers-box numbers-box numbers-box operators-box"
    "numbers-box numbers-box numbers-box operators-box";
}

.main-container > div:not(.result-box):hover {
  cursor: pointer;
}

.main-container > div > div > button {
  font-weight: 500;
}

.main-container > .result-box {
  display: flex;
  flex-direction: column;
  background-color: #222222;
  grid-area: result-box;
  justify-content: space-around;
  align-items: flex-end;
  padding: 5px 5px;
  word-wrap: break-word;
  word-break: break-all;
}

.result-box > .previous-operand {
  font-size: 1.5rem;
}

.result-box > .current-operand {
  font-size: 2.5rem;
}

.ac-del-box {
  display: grid;
  grid-area: ac-del-box;
  grid-template-columns: 2fr 1fr;
}

.ac-del-box > div {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ac-del-box > div:hover {
  background-color: #fff;
}

.ac-del-box > div:hover > button {
  color: black;
}

.numbers-box {
  display: grid;
  grid-area: numbers-box;
  align-items: center;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(4, 1fr);
}

.point-box {
  grid-column: 1/3;
}

.numbers-box > div {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.numbers-box > div:hover {
  background-color: #fff;
}

.numbers-box > div:hover > button {
  color: black;
}

.operators-box {
  display: grid;
  grid-area: operators-box;
  background-color: #3a9a6f;
  grid-template-rows: repeat(5, 1fr);
}

.operators-box > div {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.operators-box > div:hover {
  background-color: #fff;
}

.operators-box > div:hover > button {
  color: black;
}