*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background-color: #ecf0f3;
    font-family: 'Poppins',sans-serif;
    outline: none;
}

.container{
    height: 85vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.calculator{
    width: 50%;
    background-color: #ecf0f3;
    padding: 15px ;
    border-radius: 24px;
    box-shadow: inset 5px 5px 12px #ffffff,
                      5px 5px 12px rgba(0, 0, 0, .16);

    display: grid;
    grid-template-columns: repeat(4,26%);
}

input{
    grid-column: span 4;
    height: 75px;
    width: 85%;
    background-color: #ecf0f3;
    box-shadow: inset -5px -5px 12px #ffffff,
                      5px 5px 12px rgba(0, 0, 0, .16);

    border: none;
    border-radius: 24px;  
    color: rgb(70, 70, 70);    
    font-size: 30px;   
    text-align: end;
    margin: auto; 
    margin-top: 3%;
    margin-bottom: 2%;  
    margin-left: auto;
    padding: 20px;
}

button{
    height: 80% ;
    width: 70% ;
    background-color: #ecf0f3;
    box-shadow:  -5px -5px 12px #ffffff,
                  5px 5px 12px rgba(0, 0, 0, .16);

    border: none;
    border-radius: 24px;  
    margin: 12%;        
    font-size: 18px;        
}

.equal{
    width: 170%;
    border-radius: 24px;
    background-color: #ecf0f3;
    box-shadow:  -5px -5px 12px #ffffff,
                  5px 5px 12px rgba(0, 0, 0, .16);

    border: none;
}

.heading{
    font-family: 'Courier New', Courier, monospace;
    margin: auto;
    margin-top: 3%;
    width: fit-content;
}

.credits{
    margin-left: 2%;
}