styles.css

@import url('https://fonts.googleapis.com/css2?family=Andika+New+Basic:ital,wght@1,400;1,700&display=swap');

:root {
    --primary-color: #FDD835;
}

body {
    font-family: 'Andika New Basic', sans-serif;
    box-sizing: border-box;
    display: block;
    margin: 0;
    text-align: center;
}

div {
    display: block;
}

/** Navigation **/
nav {
    background-color: var(--primary-color);
    text-align: center;
    display: block;
}

.navigation {
    font-size: 2rem;
    padding: 1rem;
}

textarea {
    text-align: start;
    font-family: 'Andika New Basic', sans-serif;
    max-width: 600px;
    margin: auto;
    /* box-sizing: border-box; */
    display: block;
    width: 100%;
    min-height: 20vh;
    margin-top: 2rem;
    font-size: large;
}

button {
    background-color: var(--primary-color);
    font-family: 'Andika New Basic', sans-serif;
    border: none;
    margin: 1rem 0rem;
    padding: 1rem 2rem;
    font-size: large;
}

#output {
    max-width: 600px;
    margin: auto;
    box-sizing: border-box;
    width: 100%;
    border: 1px solid black;
    min-height: 10vh;
    max-height: 30vh;
    padding: 1rem;
}

.font {
    font-size: larger;
    padding: 1rem;
    text-align: center;
}

/** footers **/
footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    background-color: var(--primary-color);
    padding: 1rem;
    text-align: center;
    box-sizing: border-box;
}