*{
    padding: 0px;
    margin:0px;
}

html,body  {
    min-height: 100% !important; /* Important if needed */
    height: 100%;
    font-family: Arial, Helvetica, sans-serif;
    background-color: #e4e2e0;
    
}
 
.calculator{
    background-color: black;
    width: 414px; /* Width of iPhone 13 Pro Max viewport in portrait mode */
    height: 700px; /* Height of iPhone 13 Pro Max viewport in portrait mode */
    margin: 0 auto; /* Center the container horizontally */
    border-radius: 35px;
}

.displayCalculator{
    display: flex;
    justify-content: flex-end;
    align-items: flex-end;
    color: white;
    height: 21%;
}

.displayCalculator span{
    margin-right: 15px;
    font-size: 70px;
    justify-self: flex-end;
 
}

.button{
    width: 100%;
    height: 75%;
    background-color: black;
    display: grid;
    grid-template-columns: 25% 25% 25% 25%;
}

.item{
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 45px;
    border-radius: 100%;
    width: 90px;
    height: 90px;
    padding: 10px;
    cursor: pointer;
    align-self: center;
    justify-self: center; /*centers the item horizontally within its container */
    color: white; 
}

.percent{
    background-color:#a5a5a5;
    color: black;
    border: none;
}

.item1{
    background-color:#a5a5a5;
    border: none;
}

.item3{
    background-color: #d04702;
    border: none;
}

.numbers, .dot{
    background-color: #343434;
    border: none;
}
 .plusminus, .clear{
    color: black;
    font-size: 40px;
 }

 .zero{
    background-color: #343434;
    width: 200px;
    border-radius: 135px;
    grid-column: span 2; /* it covers the 2 column*/
    border: none;
 }