* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
}

body {
    width: 100%;
    height: 100vh;
    justify-content: center;
    align-items: center;
    text-align: center;
    display:flex;
    background: rgb(91, 96, 101);
    justify-content: center;
    align-items: center;
}

.calculator {
    border: 1px solid #717377;
    padding: 20px;
   
    border-radius: 16px;
  
    background: transparent;
    box-shadow: 0px 3px 15px rgba(30, 33, 38, 0.5);
}
input::placeholder{
    color:azure;
   
}

input {
    width: 320px;

    border: none;
    padding: 24px;
    margin: 10px;
    box-shadow: 0px 3px 15px rgba(113, 115, 119, 0.5);
   border-radius: 8px;
    background: transparent;
    font-size: 38px;
    text-align: right;
    color: whitesmoke;
    cursor: pointer;
    font-family: 'Times New Roman', Times, serif;
}

button {
    border: none;
    font-size: 21px;
    font-weight: 400;
    width: 60px;
    height: 60px;
    margin: 10px;
    font-weight: 800;
  
    border-radius: 16px;
    color: rgb(27, 26, 26);
    cursor: pointer;
    padding: auto;
    box-shadow: -8px -8px 15px rgba(84, 73, 73, 0.603)
}
.yellow{
    background-color: orangered;
}
.green{
    color:rgb(220, 199, 9);
    background-color: rgb(50, 48, 48);
}