* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
  font-family: monospace;
  font-size: 20px;
  font-weight: bold;
}

body {
  background-color: rgb(29, 25, 25);
}

h1 {
  text-align: center;
  margin: 4rem 0;
  font-size: 50px;
  letter-spacing: 2px;
  color: rgb(233, 233, 233);
}

.calc-body {
  text-align: center;
  background-color: rgb(173, 173, 173);
  width: 340px;
  margin: 0 auto;
  border: 3px solid rgb(204, 203, 203);
  border-radius: 7px;
  padding: 22px 18px 10px;
  box-shadow: 4px 5px 2px 1px rgba(0, 0, 0, 0.096);
}

.screen {
  background-color: rgb(100, 155, 236);
  border: 2.5px solid rgb(211, 211, 211);
  color: rgb(230, 225, 225);
  border-radius: 7px;
  padding: 5px 20px;
  height: 90px;
  display: flex;
  flex-direction: row;
  justify-content: flex-end;
  align-items: center;
  letter-spacing: 1px;
  font-size: 30px;
  overflow: hidden;
  box-shadow: 0 2px 2px 1px rgba(0, 0, 0, 0.185);
}

.big-btn-container {
  margin-top: 10px;
  padding: 7px 0;
  display: flex;
  gap: 15px;
}

.big-btn {
  border-radius: 5px;
  padding: 5px;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 50px;
  width: 150px;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 1px 1px 1px 1px rgba(0, 0, 0, 0.185);
  font-weight: normal;
  font-family: sans-serif;
  font-size: 17px;
}

/* .big-btn:active {
  box-shadow: 2px 3px 2px 2px rgba(0, 0, 0, 0.185);
} */

.clear {
  background-color: rgb(123, 224, 75);
}
.clear:hover {
  background-color: rgb(97, 211, 44);
  color: white;
}

.del {
  background-color: rgb(240, 101, 101);
}
.del:hover {
  background-color: rgb(230, 81, 81);
  color: white;
}

.btn-container {
  padding: 5px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 15px;
}

.btn {
  /* border: 2px solid rgb(173, 173, 173); */
  border-radius: 5px;
  background-color: rgb(206, 206, 206);
  padding: 5px;
  width: 60px;
  height: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  box-shadow: 1px 1px 1px 1px rgba(0, 0, 0, 0.185);
}

.btn:hover {
  background-color: rgb(173, 173, 173);
  color: white;
}

/* .btn:active {
  box-shadow: 2px 3px 2px 2px rgba(0, 0, 0, 0.185);
} */

.operator {
  background-color: rgb(100, 155, 236);
  /* border: 2px solid rgb(70, 123, 204); */
}

.operator:hover {
  background-color: rgb(70, 123, 204);
}

.equal {
  background-color: rgb(224, 177, 77);
  /* border: 2px solid rgb(233, 151, 58); */
}

.equal:hover {
  background-color: rgb(233, 151, 58);
}