body{
    margin: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: #faf8f6;
    font-family: "Mali", cursive;
    font-weight: 400;
    font-style: normal;
}

h2{
    font-size: 5rem;
    color: #d2a5ee;
    font-weight: bold;
    text-decoration: underline;
    margin: 20px;
    padding: 20px;
   
}

#calculator{
  background-color: #e7d0f5 ;
  border-radius: 20px;
  max-width: 500px;
  overflow: hidden;
  margin: 5px;
}
#display{
    width: 100%;
    padding: 20px;
    font-size: 4rem;
    text-align: left;
    border:none;
    background-color: #edd5fc;
    color: #ffffff;
    font-family: "Mali", cursive;
    font-weight: 500;
}
#keys{
    display: grid;
    grid-template-columns: repeat(4, 1fr );
    gap: 10px;
    padding: 25px;
}

button {
    width: 100px;
    height: 100px;
    border-radius: 50px;
    border:none;
    background-color: 	hsl(280, 38%, 77%) ;
    color: #faf8f6;
    font-family: "Mali", cursive;
    font-weight: bold;
    font-size: 3rem;
    cursor:pointer;
}

button:hover{
    background-color: #e7b2fc;
}
button:active{
    background-color: hsl(280, 38%, 60%);
}

.operator-btn{
    background-color:  	#ce9dd9;
}

.operator-btn:hover{
    background-color: #d291bc;
}

.operator-btn:active{
    background-color: #c470b2;
}

@media (max-width: 550px) {
    h2 {
        font-size: 3rem;
        margin: 10px;
        padding: 10px;
    }

    #calculator {
        max-width: 90%;
    }

    #display {
        font-size: 2.5rem;
        padding: 10px;
    }

    #keys {
        grid-template-columns: repeat(4, 1fr);
        gap: 5px;
        padding: 10px;
    }

    button {
        width: 70px;
        height: 70px;
        border-radius: 35px;
        font-size: 2rem;
    }
}