/* header bild */

html {
    overflow-x: hidden;
    margin-right: calc(-1 * (100vw - 100%));
  }

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

.header-img-div {
    text-align: center;
}

.header-img {
    width: 80%;
    max-width: 1450px;
    margin: 0 auto;
}

/* ============ 
main 
==============*/

.grid-div {
    width: 80%;
    max-width: 1450px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 20% 20% 20% 20% 20%;
    grid-template-areas: 
    "nav content content content content";
}

.nav-bar {
    grid-area: nav;
    font-size: 22px;
    position: fixed;
}

.content {
    grid-area: content;
    width: 90%;
    margin: 0 auto;
}

nav {
    font-family: Helvetica;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    border-right: 2px solid rgb(83, 83, 83);
}
nav li {
    margin-right: 3px;
}

nav li a {
    display: block;
    text-decoration: none;
    color: black;
    padding: 10px;
}

nav a:hover {
    background-color: #e2e2e2;
}

nav a:active {
    background-color: #c2c2c2;
}

h2 {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 25px;
    font-weight: 100;
    text-align: center;
}

h3 {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 20px;
    font-weight: 550;
    text-align: left;
    padding: 20px 0;
    margin-top: 0;
    margin-bottom: 0;
}

p {
    margin-top: 0;
    margin-bottom: 0;
    font-size: 17px;
}

#nav-sub {
    padding: 7px;
    padding-left: 13px;
    font-style: italic;
    font-size: 18px;
}

h1 {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 25px;
    font-weight: 550;
    margin-bottom: 10px;
}

/* =============
seiten-spezi
============= */

.nav-supervision {
    background-color: #e2e2e2;
}

.supervision-img {
    float: right;
    width: 40%;
    margin: 11px 0 10px 5%;
    display: block;
}

@media (max-width: 1100px) {
    .header-img {
        width: 90%;
    }

    .grid-div {
        width: 90%;
    }
}

@media (max-width: 1000px) {
    .nav-bar {
        font-size: 19px;
    }

    #nav-sub {
        font-size: 16px;
    }
}

@media (max-width: 900px) {
    .nav-bar {
        font-size: 17px;
    }

    #nav-sub {
        font-size: 15px;
        padding-left: 10px;
    }
}

@media (max-width: 800px) {
    .nav-bar {
        font-size: 17px;
    }

    .header-img {
        width: 95%;
    }

    .grid-div {
        width: 95%;
    }

    h2 {
        font-size: 20px;
    }

    #nav-sub {
        font-size: 14px;
    }

    h1 {
        font-size: 20px;
    }

    p {
        font-size: 15px;
    }

    h3 {
        font-size: 17px;
    }
}

@media (max-width: 750px) {
    .header-img {
        width: 100%;
    }

    .grid-div {
        width: 100%;
    }
}

@media (max-width: 700px) {
    .nav-bar {
        font-size: 14px;
    }

    #nav-sub {
        font-size: 11px;
    }
}

@media (max-width: 600px) {
    .nav-bar {
        font-size: 13px;
    }

    h2 {
        font-size: 17px;
    }

    #nav-sub {
        font-size: 11px;
        padding-left: 5px;
    }

    h1 {
        font-size: 17px;
    }

    p {
        font-size: 12px;
    }

    nav li a {
        padding-left: 3px;
    }

    h3 {
        font-size: 14px;
    }
}

@media (max-width: 530px) {
    .nav-bar {
        font-size: 11px;
    }

    #nav-sub {
        font-size: 9px;
        padding-left: 3px;
    }

    nav li a {
        padding-right: 6px;
        padding-top: 6px;
        padding-bottom: 6px;
    }

    nav ul {
        border-right: 1px solid rgb(83, 83, 83);
    }
}

@media (max-width: 440px) {
    .nav-bar {
        font-size: 10px;
    }

    #nav-sub {
        font-size: 8px;
    }

    nav li a {
        padding-left: 2px;
    }

    .grid-div {
        grid-template-columns: 22% 20% 20% 19% 19%;
    }
}

@media (max-width: 365px) {
    .grid-div {
        grid-template-columns: 24% 19% 19% 19% 19%;
    }
}

@media (max-width: 330px) {
    .grid-div {
        grid-template-columns: 26% 19% 19% 18% 18%;
    }
}