.container{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh   ;
    background-color: #a7afcc;
    
}
#input{
    width: 100%;
    
    height: 80px;
    margin-bottom: 20px;
    font-size: 24px;
    text-align: right;
    
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: white;
}

.display{
    width: 100%;
    height: 60px;
    margin-bottom: 20px;
    font-size: 24px;
    text-align: right;
    
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: white;
}

.btn-calculator{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    font-size: 18px;
    cursor: pointer;
    
    color: white;
    border: none;
    border-radius: 5px;
}

.calculator{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;    
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: #4b66c7;
}

.btn{
    border-radius: 5px;
    width: 80px;
    height: 80px;
    
    font-size: 18px;
    cursor: pointer;
}