todo.css

#ToDoButton {
    background-color : lightgreen;

}

body section {
    border: solid 1px;
    border-radius: 5px;
    width: 300px;
    height: 200px;
    padding: 6px;
    margin-top: 5px;
    font-family: Helvetica;
}

#entry {
    width: 200px;
    border-radius: 5px;
    padding-left: 5px;
}

ul {
    list-style-type: none;
}