.cd-container {
    height: 460px;
    width: 310px;
    background-color: aquamarine;
    margin: 10px auto;
    padding: 5px;
    border: 3px solid #0f2c4b;
    border-radius: 10px;
}

#input {
    height: 70px;
    width: 295px;
    padding: 10px;
    float: left;
    text-align: right;
    font-size: 39px;
    border-radius: 10px;
    background-color: white;
}

#operators, #numbers {
    margin: 0;
}

#operators > a {
    cursor: pointer;
    display: block;
    height: 45px;
    width: 45px;
    float: left;
    padding: 2px;
    margin: 5px 6px;
    text-align: center;
    text-decoration: none;
    font-size: 39px;
}

#numbers > a {
    cursor: pointer;
    display: block;
    width: 50px;
    height: 50px;
    float: left;
    padding: 10px;
    margin: 5px 15px;
    text-align: center;
    text-decoration: none;
    font-size: 46px;
}