body {
    margin: 0;
    padding: 0;
    text-align: center;
}

* {
    box-sizing: border-box;
    font-family: sans-serif;
}

#functionInput {
    text-align: center;
    font-size: 20px;
    padding: 1rem;
}

#intervallLinksInput, #intervallRechtsInput {
    text-align: center;
    width: 2rem;
    border: none;
    border-bottom: 1px #222 solid;
}

#epsilonInput {
    width: 3rem;
    text-align: center;
    border: none;
    border-bottom: 1px #222 solid;
}

input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type=number] {
    -moz-appearance: textfield;
}

#canvas {
    border: solid 1px #000;
    position: relative;
}