html,
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
        Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
}
canvas {
    border: 1px dashed darkmagenta;
}
label {
    user-select: none;
    margin: 5px;
    display: inline-block;
}
input[type="text"],
input[type="number"] {
    font-size: 22px;
    line-height: 1.6em;
    margin: 10px;
    padding: 0 5px;
    text-align: center;
    border-radius: 5px;
    border: 1px solid #ccc;
    outline: none;
    transition: all 0.2s ease;
}
.function-input {
    font-family: "Times new roman";
}
input[type="text"]:focus,
input[type="number"]:focus {
    border: 1px solid darkmagenta;
}
input[type="submit"] {
    border: none;
    font-weight: 300;
    font-size: 22px;
    padding: 0 20px;
    border-radius: 5px;
    line-height: 1.6em;
    background-color: DarkMagenta;
    color: white;
    margin: 5px;
}