    body {
        --nav-width: 200px;
        margin: 0 0 0 var(--nav-width);
        font-family: 'Quicksand', sans-serif;
        font-size: 18px;
    }

    .nav {
        position: fixed;
        top: 0;
        left: 0;
        width: var(--nav-width);
        height: 100vh;
        background: #222222;
    }

    .nav__link {
        display: block;
        padding: 16px 22px;
        text-decoration: none;
        color: #eeeeee;
        font-weight: 500;
    }

    .nav__link:hover {
        background: rgba(255, 255, 255, 0.05);
    }

    #app {
        margin: 2em;
        line-height: 1.5;
        font-weight: 500;
    }

    a {
        color: #009579;
    }

    .form {
        font-size: 16px
    }
    
    .form * {
        box-sizing: border-box;
        line-height: 1.5;
    }

    .form__title {
        font-size: 2em;
        font-weight: 600;
    }

    .form__item {
        display: flex;
        flex-direction: column;
    }

    .form__item > * {
        align-self: flex-start;
    }

    .form__label {
        font-weight: 600;
        padding: 10px 0;
    }

    .form__input {
        -webkit-appearance: none;

        width: 100%;
        max-width: 425px;

        padding: 0.8em;
        font-size: 0.9em;
        font-family: sans-serif;

        outline: none;
        border: 1px solid #dddddd;
        border-radius: 4px;
        background: #f9f9f9;
        transition: background 0.25s, border-color 0.25s, color 0.25s;
    }

    .form__input:focus {
        background: #ffffff;
    }

    .form__input::placeholder {
        color: #bbbbbb;
    }

    .form__input-error-message { 
        height: 20px;
        margin-top: 0.5rem;
        font-size: 0.85rem;
        color: #cc3333;
    }