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

body {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background: linear-gradient(90deg, #0f0f4f, #0f0f3f);
}

.wrapper {
  background: #000;
  border: 2px solid #f2f2f250;
  box-shadow: 0px 0px 20px 10px #ffffff20;
  border-radius: 10px;
  padding: 5px;

}

.text-group {
  margin-bottom: 10px;
  padding-right: 15px;
  padding-top: 20px;
  width: 100%;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: right;
  border-radius: 10px;
}

.text {
  color: #fff;
  font-size: 35px;
}

.btn-group {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.btn {
  margin: 5px;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  border: 1px solid #f2f2f230;
  box-shadow: -5px -5px 25px #ffffff30;
  background: transparent;
  color: #00ff15;
  font-size: 30px;
}

.delete{
    font-size: 18px;
}

.btn-number{
    color: #fff;
}

.btn-result {
  background: #f57f00;
}