/* STRUCTURE */

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

body {
    font-family: 'Arial', 'sans-serif';
    line-height: 1.6;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background-color: #333;
    color: #fff;
    padding: 30px 0;
    text-align: center;
}

/* ELEMENTS */
h2 {
    font-size: 2em;
    margin-top: 20px;
    margin-bottom: 20px;
}

h3 {
    font-size: 1.5em;
    margin-top: 10px;
    margin-bottom: 10px;
}

ul {
    list-style-type: none;
}

ul li {
    margin: 10px 0;
    margin-left: 20px;
}

footer {
    background-color: #333;
    color: #fff;
    padding: 20px 0;
    text-align: center;
}

/* CLASSES */
.container {
    width: 80%;
    margin: 0 auto;
}