@import url('https://fonts.googleapis.com/css2?family=Open+Sans:ital,wght@0,300..800;1,300..800&display=swap');

html {
    background: repeating-radial-gradient(rgb(0, 255, 0), rgb(0, 0, 0) 20px);
    background-size: 12px 12px;
    padding: 24px;
}

body {
    font-size: 16px;
    background-color: orangered;
    border: 10px solid lightseagreen;
    border-radius: 16px;
    padding: 24px;
    margin-left: auto;
    margin-right: auto;
    font-family: "Open Sans", sans-serif;
}

h1 {
    color: blue;
    font-size: 2.5rem;
}

h2 {
    font-size: 2.3rem;
    color: blue;
    text-align: center;
}

h3 {
    color: blue;
}

p {
    font-size: 1.9rem;
    color: blue;
}

img {
    width: 450px;
    max-width: 100%;
    border: 1px solid #111111;
    border-radius: 30px;
}

li {
    font-size: 1.9rem;
    color: blue;
}

nav ul {
    list-style-type: none;
    background-color: maroon;
    border: 4px solid yellow;
    border-radius: 10px;
    font-family: sans-serif;
    font-weight: bold;
    padding: 16px;
    text-align: center;
}

nav ul li {
    display: block;
    padding-right: 8px;
    padding-left: 8px;
}

@media all and (min-width: 769px) {
    nav ul li {
        display: inline;
        border-right: 2px solid yellow;
    }
}

nav ul li:last-child {
    border-right: none;
}

nav ul li a {
    text-decoration: none;
    color: red;
}

nav ul li a:hover {
    text-decoration: underline;
    color: rgb(60, 255, 0);
}

nav li.selected {
    color: #606060;
}

head {
    background-color: yellow;
}

footer {
    background-color: purple;
    border-radius: 7px;
    font-size: 35px;
    text-align: center;
    clear: both;
    margin-top: 20px;
}

article {
    background-color: rgb(0, 255, 0);
    border-radius: 14px;
    max-width: 100%;
    padding: 10px 20px;
}

aside {
    font-size: x-large;
    background-color: orange;
    border-radius: 14px;
    max-width: 100%;
    padding: 10px 20px;
    margin-top: 20px;
}

@media all and (min-width: 769px) {
    article.aside {
       float: left;
       width: 59%;
    }

    aside {
        float: right;
        width: 30%;
        margin-top: 0;
    }
}

header {
    background: none;   
}

section {
    background-color: aquamarine;
    border-radius: 7px;
    border: 7px solid rgb(0, 15, 179);
    margin-bottom: 5px;
    padding-bottom: 5px;
}

.container {
    max-width: 1300px;
    margin: 0 auto;
}


.container:after {
    content: "";
    display: table;
    clear: both;
  }


p.pictures {
    border: 5px solid #014603;
    padding: 16px;
    background-color: hotpink;
    border-radius: 10px;
    color: aqua;
    font-weight: bolder;
}

pre {
    overflow-x: scroll;
}