style.css

@import url('https://fonts.googleapis.com/css2?family=Roboto+Mono:ital,wght@1,300&display=swap');
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    font-family: 'Roboto Mono', monospace;
}

.navbar{
    background-image: linear-gradient(#5aaccf, #1c406eb3);
    text-align: center;
    font-size: 2rem;
    padding: 1.5rem;
}

section{
    margin: auto;
    max-width: 600px;
    padding: 1rem;
}

textarea{
    width: 100%;
    display: block;
    font-size: large;
    margin-top: 2rem;
    max-height: 20vh;
}

.btn{
    margin: 1rem 0;
    border: none;
    font-size: 30px;
    padding: 1rem;
    background-image: linear-gradient(#5aaccf, #1c406eb3);
    font-family: inherit;
}

.btn:hover{
    cursor: pointer;
}

#output{
    margin-top: 5px;
    padding: 1rem;
    width: 100%;
    max-height: 20vh;
    min-height: 10vh;
    border: 1px solid black;
    overflow: scroll;

}

#footer{
    background-image: linear-gradient(#5aaccf, #1c406eb3);
    text-align: center;
    font-size: 1.5rem;
    padding: 1rem;
    width: 100%;
    position: fixed;
    bottom: 0;
}

#footer p{
    max-width: 600px;
    margin: auto;
    font-size: medium;
}