.header-text{
    font-size: 20px;
    text-align: center;
}

.calculator-container{
    border: 3px black solid;
    border-radius: 8px;
    box-shadow: 5px 5px #E6E9EB;
    width: 400px;
    height: 650px;
    background-color: black;
    margin: 0 auto;
    padding: 10px;
}

.screen{
    height: 200px;
    font-size: 60px;
    color: white;
    overflow: hidden;
}

.btn-container{
    display: grid;
    column-gap: 20px;
    grid-template-columns: auto auto auto auto;
}

button{
    padding: 10px;
    height: 80px;
    width: 80px;
    font-size: 30px;
    border-radius: 50%;
    margin: 5px 0;
    border: 1px black solid;
}

.bg-orange {
    background-color: #FE9E07;
    color: black;
    transition: background-color 0.3s, color 0.3s;  
}

.bg-orange:hover {
    background-color: #FFAF49;  
    color: black;  
}

.bg-light-grey {
    background-color: #a3a4a5dc;
    color: white;
    transition: background-color 0.3s, color 0.3s;
}

.bg-light-grey:hover {
    background-color: #3d3d3d;
    color: white;
}

.bg-dark-grey {
    background-color: #333333;
    color: white;
    transition: background-color 0.3s, color 0.3s;
}

.bg-dark-grey:hover {
    background-color: #696969dc;
    color: white;
}


.clear-btn{
    font-size: 20px;
}