styles.css

body {
    background-color: #212529;
    color: #495057;
}

.notepad {
    width: 500px;
    height: 500px;
    padding: 10px;
    border: #fff;
    background-color: #dee2e6;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 10px;
    box-shadow: #495057;
}

.saveButton {
    border: 1px #fff solid;
    background-color: #fff;
    border-radius: 4px;
    margin-top: 10px;
    margin-left: 870px;
    width: 100px;
}

.saveButton:hover {
    cursor: pointer;
}

.header {
    text-align: center;
    font-size: 100px;
    color: #fff;
}

.footer {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 15px;
    color: #fff;
    text-align: center;
    margin-top: 20px;
}

.footer > a{
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 15px;
    color: #dee2e6;
    text-align: center;
    margin-top: 100px;
}