body {
    /* background-color: rgba(37, 37, 37, 0.411); */
    background-color: black;
}

.calculator {
    background-color: wheat;
    width: 320px;
    height: 520px;
    margin: 0 auto;
    background-color: #eaedef;
    margin-top: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0,0.2),0 6px 20px 0 rgba(0, 0, 0,0.19);
}
#result{
    text-align: right;
    padding: 15px 20px 0px 0px;
}
#history{
    
   
}
#history-value{
    font-size: 15px;
    color: #e62020;
    background-color: #eaedef;
    border-width: 0;
    text-align: end;
    height: 20px;
    /* margin-bottom: -250px; */
}
#output{
    font-size: 30px;
    /* margin-top: -1.3rem; */
    /* margin-bottom: -2.5rem; */
}
.number,.operator,.empty{
    background-color: ;
    width: 50px;
    height: 50px;
    margin: 15px;
    float: left;
    border-radius: 50%;
    border-width: 0;
    font-weight: bold;
    font-size: 15px;
    background-color: #91919144;
}
.number,.empty{
    background-color: #eaedef;
    
}
.number,.operator{
    cursor: pointer;
}
.number:focus,.operator:focus, .empty:focus{
    outline: 0;
}
.number:active,.operator:active {
    font-size: 22px;
}
button:nth-child(3){
    background-color:rgba(0, 255, 255, 0.226);
    font-size: 20px;
    
}
button:nth-child(4){
    background-color: rgba(0, 128, 0, 0.616);
    font-size: 20px;
    
}
button:nth-child(8){
    background-color: orange;
    font-size: 20px;
}

button:nth-child(12){
    background-color: pink;
    font-size: 25px;
}

button:nth-child(16){
    background-color: rgb(100, 100, 228);
    font-size: 20px;
}

button:nth-child(19){
    background-color: blueviolet;
    font-size: 20px;
    width: 130px;
    border-radius: 10px;
}