style.css

body {
    background-color: rgb(230, 219, 202);
}

h1 {
    background-color: aquamarine;
    text-align: center;
}

h1:hover {
    box-shadow: 0 16px 32px 0 rgba(0, 0, 0, 0.2);
}

table {
    margin: 0 auto;
    max-width: 350px;
    text-align: center;
    margin-top: 10px;
    box-shadow: 0 4px 8px 0 #2303dbd4;
    transition: 0.3s;
    font-size: 0;
    border-radius: 20px;

}

table:hover {
    box-shadow: 0 26px 32px 0 rgba(14, 11, 229, 0.2);
}

td {
    width: 87px;
    height: 70px;
    font-weight: bold;
    font-size: 16px;
    background-color: aquamarine;
    border-radius: 20px;
}

input {
    width: 435px;
    height: 100px;
    font-size: 32px;
    font-weight: bold;
    text-align: right;
    padding: 0 5px;
    letter-spacing: 2px;
    border-radius: 20px;
}

button {
    width: 87px;
    height: 70px;
    font-weight: bold;
    font-size: 16px;
    background-color: aquamarine;
    border-radius: 20px;
}

button:hover {
    background-color: darkcyan;
}

p {
    text-align: center;
    color: red;
}