body {
    font-family: "Helvetica", "Arial", sans-serif;
}

button {
    background-color: darkslateblue;
    color: white;
    border: none;
}

.main-box {
    padding-top: 2em;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.title-box {
    font-size: 18pt;
    font-weight: bold;
}

.controls-box {
    padding-top: 2em;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.control-box {
    height: 3em;
}

.result-anchor {
    text-decoration: none;
}

.control-box button {
    font-size: 12pt;
    width: 13em;
    height: 2em;
}

.control-box input {
    font-size: 12pt;
    width: 15em;
    height: 2em;
    border-color: darkslateblue;
    text-align: center;
    visibility: hidden; /* this is changed in JS when we reveal the input */
}

.results-box {
    max-width: 40em;
}

.result-anchor {
    text-decoration: none;
}

.result-box {
    min-height: 6em;
    margin-top: 1em;
    padding-left: 15px;
    padding-right: 15px;
    padding-top: 1px;
    padding-bottom: 1px;
    background-color: lightblue;
    color: black;
}

.footer {
    padding-top: 10em;
    font-size: 8pt;
    text-align: center;
}