*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: serif;
    background-color: #fff3a7;
}

main {
    height: fit-content;
    width: fit-content;
    margin: 6rem 40%;
    padding: 1rem;
    border-radius: 2rem;
    box-shadow: 0px 0px 10px rgba(0,0,0,0.5);
    background-color: #64a97b;
}

main>.heading {
    padding: 0.7rem;
    text-align: center;
    font-size: 1.4rem;
    font-family:monospace;
    font-weight: 400;
    color:#dd0a35;
    text-shadow: 0px 0px 4px rgba(0,0,0,0.5);

}
.header {
    margin: 2rem;
    margin-bottom: 1rem;
    padding: 1rem;
    margin-top: 0;
    height: fit-content;
    width: fit-content;
    border-radius: 2rem;
    box-shadow: 0px 0px 10px rgba(0,0,0,0.5);
    background-color: #fff;
    
}
.header input{
    display: block;
    width: 12rem;
    height: 3rem;
    margin: 1rem;
    margin-left: 1rem;
    margin-top: 1.3rem;
    margin-right: 0;
    border-radius: 10px;
    border: none;
    box-shadow: 0px 0px 10px rgba(0,0,0,0.5);
    text-align: right;
    font-size: 1.3rem;
    padding: 0.6rem;
}



.header .container {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: .5rem;
    justify-content: center;
    width: fit-content;
}
.header .container div {
    text-align: center;
}
.header .container div>button {
    height: 50px;
    width: 50px;
    border: none;    
    font-size: 24px;
    border-radius: 50%;
    border: 0.3px solid rgba(0,0,0,0.3);
    background-color: rgba(172, 172, 172, 0.849);
    box-shadow: 0px 0px 4px rgba(0,0,0,0.3);
    cursor: pointer;
}
.header .container div>.btn {
    background-color: #ffffff;
}
.header .container div>#equal {
    background-color: rgb(254, 137, 28);
    box-shadow: 0px 0px 6px rgba(0,0,0,0.5);
}

main>.creator {
    padding: 0.5rem;
    margin: 0.3rem;
}

main>.creator>h4 {
    text-align: end;
    font-size: 1.4rem;
    color: #033740;
    font-family: 'Times New Roman', Times, serif;
    text-shadow: 0px 2px 0px #eae3d178,
    0px 3px 3px rgba(0,0,0,0.15),
    0px 2px 2px rgba(0,0,0,0.1),
    0px 2px 2px rgba(0,0,0,0.1);
}