body {
    box-sizing: border-box;
    min-width: 400px;
    font-family: Arial, Helvetica, sans-serif;
    margin-left: 10px;
    margin-right: 10px;
    padding: 0;
    text-align: justify;
}

header {
    position: sticky;
    position: -webkit-sticky;
    top: 0px;
    background: white;
    border-bottom: 1px dotted #fd3003;
    padding-bottom: 5px;
 }

h1 {
    padding-top: 10px;
}

li {
    list-style-type: none;
}

a {
    text-decoration: none;
}

nav {
    background:  white;
    display: inline-block;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    margin-top: 20px;
    margin-bottom: 0;
    margin-left: 0;
}

nav ul li {
    display: inline-block;
    background: #fd3003;
    padding: 5px;
    border-radius: 5px;
    margin-right: 10px;
    margin-bottom: 5px;
}

nav ul li a {
    color: white;
    font-weight: 700;
    display: block;
}

nav ul li a:hover {
    opacity: 80%;
    font-weight: 100px;
    border: 5px solid #fd3003;
}

img {
    width: 100%;
    height: auto;
}

#tel {
    color: red;
}

#gridphoto {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(100px);
    border: 1px solid blue;
}

#gridphoto img {
   padding: 10px;
   margin: 10px;
}

.container {
    margin: 0 auto;
    width: 1000px;
}

.principale {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: auto;
    column-gap: 15px;
}

.principaleItem {
    text-align: justify;
}

.imagesHover:hover {
    width: 800px;
    height: auto;
}

@media all and (max-width: 1000px) {
    .container {
        width: 700px;
    }

    nav {
        display: inline-flex;
    }
    h1 {
      font-size: 26px;
    }

    .principale {
        grid-template-columns: 1fr 1fr;
        grid-auto-rows: auto; 
        row-gap: 10px; 
    }
    
    .principaleItem {
        margin-top: 0;
    }

    #Bild:nth-of-type(1) {
        grid-column-start: 1;
        grid-column-end: 2;
        grid-row-start: 1;
        grid-row-end: 2;
        }
    
    #Bild:nth-of-type(2) {
        grid-column-start: 1;
        grid-column-end: 3;
        grid-row-start: 2;
        grid-row-end: 3;
        width: 50%;
        margin: auto;
    }

    #Bild:hover {
            width: 500px;
            height: auto;
    }
}

@media all and (max-width: 730px) {
    .container {
        width: 90%;
    }
    .principale {
        grid-template-columns: 1fr;
        grid-auto-rows: auto; 
        row-gap: 10px; 
    }
   
    header{
        position: relative;
    }

    #Bild1, #Bild2{
       width: 50%;
    }

    /*#Bild1 {
        grid-column-start: 1;
        grid-column-end: 2;
        grid-row-start: 1;
        grid-row-end: 2;
        margin: auto;
    }
       
    #Bild2 {
        grid-column-start: 1;
        grid-column-end: 2;
        grid-row-start: 3;
        grid-row-end: 4;
        /* margin: auto;* */