* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial;
    background: #f5f5f5;
}

/* Esconde o checkbox */

#menu {
    display: none;
}

/* Botão */

.botao {
    position: fixed;

    top: 20px;
    left: 20px;

    font-size: 30px;

    cursor: pointer;

    z-index: 2;
}

/* Menu */

.menu {
    position: fixed;

    top: 0;
    left: -250px;

    width: 250px;
    height: 100vh;

    background: #222;

    padding: 80px 20px;

    transition: 0.3s;
}

/* Título */

.menu h2 {
    color: white;

    margin-bottom: 30px;
}

/* Links */

.menu a {
    display: block;

    color: white;

    text-decoration: none;

    padding: 15px;
}

/* Abrir menu */

#menu:checked ~ .menu {
    left: 0;
}

/* Conteúdo */

main {
    text-align: center;

    padding-top: 150px;
}

main h1 {
    font-size: 40px;

    margin-bottom: 20px;
}

main p {
    font-size: 18px;
}