* {
    box-sizing: border-box;
}

body {
    font-family: "Times New Roman", Times, serif;
    background: linear-gradient(to top, #00aaff, #00ff6c);
    font-size: 25px;
    text-align: justify;
}

header {
    background-color: #333;
    width: 100%;
    height: auto;
    text-align: center;
    font-size: 35px;
    color: white;
}

nav {
    float: left;
    width: 100%;
    height: auto;
    background: #ccc;
    padding: 10px;
}

ul {
    font-family: Impact, Charcoal, sans-serif;
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
}

li {
    float: left;
}

li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

li a:hover {
    background-color: #00aaff;
}

article {
    padding: 5%;
    background-color: #333;
    color: white;
    height: auto;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
    text-align: justify;
}

section {
    padding: 5%;
    font-size: 18px;

}

section:after {
    content: "";
    display: table;
    clear: both;
}

h1 {
    text-shadow: 4px 4px 4px #aaa;
    color: #00ff6c;
    font-family: Impact, Charcoal, sans-serif;
}

h2 {
    color: #00aaff;
    font-family: "Lucida Console", Courier, monospace;
    font-variant: small-caps;
}

h3 {
    font-family: Arial, Helvetica, sans-serif;
    color: gray;
}

footer {
    background-color: #333;
    padding: 10px;
    text-align: center;
    color: #00aaff;
}