/* CSS Syntax
selector { property: value(s);} */
h1 {
    font-size: 2em;
    color: black;
    text-align: center;
    text-transform: uppercase;
    margin: 0.5em 0.3em 0.5em 0.3em;
    font-family: "politica", sans-serif;
    font-weight: 800;
    font-style: normal;
}

body {
    background-color: whitesmoke;
    margin: 0;
}

header {
    background-color: white;
    padding: 30px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    flex-direction: row;
    min-height: 5vh;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    box-sizing: border-box;
    z-index: 999;
}

nav a {
    color: grey;
    text-decoration: none;
    cursor: pointer;
    background-color: white;
    padding-top: 0.4em;
    padding-right: 0.6em;
    padding-bottom: 0.4em;
    padding-left: 0.6em;
    /* display: block;*/
    display: inline-block;
    margin: 0.5em;
    transition: 0.5s;
    font-family: "roboto", sans-serif;
    font-weight: 400;
    font-style: normal;
    letter-spacing: 0.09;
}

nav a:hover {
    background-color: white;
    color: #40d0e0;
}

main a {
    color: white;
    font-family: "roboto", sans-serif;
    font-weight: 400;
    font-style: normal;
}

main {
    background-color: white;
    padding-top: 12em;
}

h2 {
    text-align: center;
    text-transform: uppercase;
    margin-top: 0.5em;
    margin-bottom: 0.5em;
    padding-top: 1em;
    padding-bottom: 1em;
    font-size: 2.5em;
    color: white;
    font-family: "politica", sans-serif;
    font-weight: 800;
    font-style: normal;
}

h3 {
    font-size: 2.2em;
    text-align: center;
    margin: 3em 0 2em 0;
    color: white;
    font-family: "politica", sans-serif;
    font-weight: 800;
    font-style: normal;
}

article {
    background-color: #0f171e;
    margin-left: auto;
    margin-right: auto;
    padding-top: 1em;
    padding-bottom: 3em;
    font-family: "roboto", sans-serif;
    font-weight: 400;
    font-style: normal;
}

p {
    font-size: 1.1em;
    margin-bottom: 1.5em;
    max-width: 80ch;
    margin-left: auto;
    margin-right: auto;
    padding: 0 1em;
    color: white;
    line-height: 1.5em;
    /*
    margin: 0 auto 1.5em auto (kurz schreibweise)
    */
}

.dark-mode {
    background-color: #0f171e;
    color: white;
}

.dark-mode p {
    background-color: #0f171e;
    color: white;
}

.dark-mode h2 {
    background-color: #0f171e;
    color: white;
}

.light-mode {
    background-color: white;
    color: black;
}

.light-mode p {
    background-color: white;
    color: black;
}

.light-mode h2 {
    background-color: white;
    color: black;
}

.light-mode ul {
    background-color: white;
    color: black;
}

.light-mode li {
    background-color: white;
    color: black;
    border-color: black;
}

.light-mode a {
    background-color: white;
    color: black;
}

.image-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.image-container figure {
    width: 390px;
    margin: 4px;
    flex-grow: 1;
    filter: grayscale(1);
    transition: filter 0.5s;
    border-radius: 10px;
    box-shadow: 4px 4px 10px #40d0e0;
    overflow: hidden;
}

.image-container figure:nth-of-type(2) {
    transform: translate(0%, -5%);
}

.image-container figure:nth-of-type(5) {
    transform: translate(0%, -5%);
}

.image-container figure:nth-of-type(1) {
    transform: translate(0%, 5%);
}

.image-container figure:nth-of-type(3) {
    transform: translate(0%, 5%);
}

.image-container figure:nth-of-type(4) {
    transform: translate(0%, 5%);
}

.image-container figure:nth-of-type(6) {
    transform: translate(0%, 5%);
}

.image-container figure:hover {
    filter: grayscale(0);
}

.display-inline .container {
    margin: 2.5em 0 2.5em 0;
    padding: 1em;
    background-color: #0f171e;
}

.display-inline .item {
    display: inline;
    margin: 0.5em;
    padding: 0.5em;
    background-color: #40d0e0;
    text-transform: uppercase;
}

.display-inline-block .container {
    margin: 2.5em 0 2.5em 0;
    padding: 1em;
    background-color: #0f171e;
}

.display-inline-block .item {
    display: inline-block;
    margin: 0.5em;
    padding: 0.5em;
    background-color: #40d0e0;
    text-transform: uppercase;
}

.display-flex .container {
    margin: 2.5em 0 2.5em 0;
    padding: 1em;
    background-color: #40d0e0;
    display: flex;
    border: solid 4px #0f171e;
    flex-wrap: wrap;
    justify-content: space-around;
    min-height: 40vh;
    align-items: center;
}

.display-flex .item {
    margin: 0.5em;
    padding: 0.5em;
    background-color: #0f171e;
    text-transform: uppercase;
    border: solid 1px white;
}

.container {
    margin: 2.5em 0 2.5em 0;
    padding: 1em;
    background-color: #0f171e;
}

.item {
    margin: 0.5em;
    padding: 0.5em;
    background-color: #40d0e0;
    text-transform: uppercase;
}

.merksatz {
    font-size: 1.8em;
    max-width: none;
    text-align: center;
    border-bottom: 4px;
    border-top: 4px;
    border-bottom-style: solid;
    border-top-style: solid;
    padding: 1em 4em;
    margin: 2em auto 1em auto;
    font-family: "roboto", sans-serif;
    font-weight: 400;
    font-style: italic;
}

/*.mack {
    background-color: darkviolet;
    color: yellow;
    font-size: 4em;
    font-weight: bold;
    padding: 1em;
    border: dashed 10px;
}*/

.current {
    background-color: white;
    color: #40d0e0;
}

.bildformate-colors header {
    background-color: white;
}

.bildformate-colors main {
    background-color: white;
}

.www-colors header {
    background-color: white;
}

.www-colors main {
    background-color: white;
}

.htmlcss-colors header {
    background-color: white;
}

.htmlcss-colors main {
    background-color: white;
}

.responsive-colors header {
    background-color: white;
}

.responsive-colors main {
    background-color: white;
}

.www-colors .merksatz {
    background-color: #40d0e0;
}

.htmlcss-colors .merksatz {
    background-color: #40d0e0;
}

.layout-colors header {
    background-color: white;
}

.layout-colors main {
    background-color: white;
}

.layout-colors .merksatz {
    background-color: #40d0e0;
}

img {
    width: 100%;
}

figure {
    background-color: hsl(0, 0%, 97%);
    margin-left: 0;
    margin-right: 0;
    margin-bottom: 2em;
    margin-top: 2em;
    padding-bottom: 0.5em;
}

figcaption {
    text-align: center;
    font-size: 0.9em;
    padding-top: 1em 1em 1.5em 1em;
    color: black;
}

ul {
    list-style-type: none;
    margin: 0 auto 1.5em auto;
    max-width: 80ch;
    padding: 0;
}

li {
    padding: 1em 3em 0 3em;
    border-top-style: solid;
    border-top-width: 1px;
    border-top-color: white;
    margin-bottom: 3em;
    font-size: 1.1em;
    color: white;
}

footer {
    background-color: #0f171e;
    color: white;
    padding-top: 1em;
    padding-right: 3em;
    padding-left: 3em;
    padding-bottom: 1.5em;
    font-size: 0.9em;
}

footer a {
    color: white;
}