* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  background-color: darkslategray;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

.calculator-wrapper input {
  width: 100%;
  background: #0f3460;
  border: none;
  border-radius: 10px;
  color: #fff;
  font-size: 2rem;
  font-weight: 300;
  text-align: right;
  padding: 16px 20px;
  margin-bottom: 20px;
  letter-spacing: 1px;
  outline: none;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.4);
}
.button-wrapper {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.Calculator-Container {
  background: #16213e;
  border-radius: 16px;
  padding: 24px;
  width: 340px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.row {
  display: flex;
  flex-direction: row;
  gap: 10px;
}

.btn {
  flex: 1;
  background-color: gray;
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 18px 0;
  font-size: 1.1rem;
  cursor: pointer;
}
.btn:hover {
  background-color: aqua;
}
.btn:active {
  transform: scale(0.94);
  background: #1a6fa8;
}

.btn.del {
  background-color: red;
}
.btn.reset {
  flex: 3;
  background: #922b21;
  letter-spacing: 1px;
}
.btn.reset:hover {
  background: #c0392b;
}
.btn.equals {
  background: #e94560;
}

.btn.equals:hover {
  background: #ff6b81;
}