body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
}

.grid-container9 {
    display: grid;
    grid-template-columns: repeat(15, 1fr); 
    grid-template-rows: auto 200px 1fr; 
    height: 100vh; 
    gap: 0;
}

.grid-item100 {
    grid-column: 1 / span 15; 
    grid-row: 1; 
    background-color: #333333;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    border: 1px solid #555555;
    padding: 0;
    margin: 0;
    position: sticky;
  
}
details {
    position: relative;
    font-size: 16px;
    color: white;
    cursor: pointer;
    border: none;
    outline: none;
}

details summary {
    padding: 10px;
    background-color: #444444;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s ease;
}

details summary:hover {
    background-color: #555555;
}

.details-content {
    background-color: #333333;
    border: 1px solid #3a3a3a;
    border-radius: 10px;
    padding: 10px;
    
    margin-top: 5px;
    display: flex;
    flex-direction: column; 
    gap: 5px; 
}

.details-content a {
    color: white;
    text-decoration: none;
    font-size: 14px;
    padding: 5px 10px;
    transition: color 0.3s ease;
    border-radius: 5px;
}

.details-content a:hover {
    background-color: #555555;
    color: #39c0ff; 
}


.title1 {
    font-size: 70px;
    font-weight: 400;
    text-align: center;
    margin: 10px 0;
}

.nav-links {
    display: flex;
    flex-direction: column; 
    padding: 0;
    margin: 0;
    justify-content: center;
    align-items: center;
}


.nav-links a {
    color: white;
    text-decoration: none;
    font-size: 30px;
    margin: 5px 0;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #1900ff; 
}


.grid-item102 {
    grid-column: 1 / span 15; 
    grid-row: 2; 
    background-color: #444444;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    padding: 20px;
    font-size: 20px;
    position: relative; 
    overflow: hidden; 
    border: #333333 5px;
}

.grid-item102 iframe {
    width: 100%; 
    height: 100%; 
    border: none; 
    object-fit: cover;
}

.grid-item101 {
    grid-column: 1 / span 15; 
    grid-row: 3; 
    background-color: #333333;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    padding: 0;
    margin: 0;
    height: 100%; 
}

.grid-container1 {
    display: grid;
    grid-template-columns: 10vh 10vh 10vh 10vh 10vh 10vh 10vh 10vh 10vh 10vh; 
    grid-template-rows: 10vh 10vh 10vh 10vh 10vh 10vh 10vh 10vh 10vh 10vh; 
    height: 100vh; 
}

.grid-item1 {
    background-color: #292929;
    grid-row: 1 / span 9;
    grid-column: 1 / span 10;
    border-radius: 30px;
    margin-top: 20px;
    border: solid #3a3a3a 5px;
    justify-content: center;
    align-items: center;
    text-align: center;
}
.grid-item3 {
    background-color: rgb(125, 129, 129);
    grid-row: 2 / span 1;
    grid-column: 2 / span 8;
    margin-top: 10px;
    border-radius: 30px;
    
}
h2 { 
    font-size: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.grid-itemoffen {
    background-color: rgb(125, 129, 129);
    grid-row: 3 / span 1;
    grid-column: 2 / span 8;
    margin-top: 10px;
    border-radius: 30px;
    
}


.eingabe-container {
    display: inline-block;
    flex-direction: column;
    position: relative; 
    display: flex;
    justify-content: center;
    justify-items: center;
    align-items: center;
}

.eingabe-container input {
    width: 300px;
    padding: 10px 20px;
    border: 1px solid #3a3a3a;
    border-radius: 10px;
    font-size: 15px;
    transition: border-color , box-shadow;
    background-color:#292929 ;
}

p {
    margin-top: 15px;
    margin-bottom: 1px;
}
.grid-item6 {
    background-color: #292929;
    grid-row: 5 /span 1;
    grid-column: 7 /span 1;
    display: flex;
    justify-items: center;
    justify-content: center;
}
.knopf {
    height: 20px;
    margin-top: 30px;
}

.p1 {
    margin-top: 50px;
}

.grid-item7 {
    background-color: #3a3a3a;
    grid-row: 6 /span 2;
    grid-column: 3 /span 6;
    border-radius: 20px;
    border: #ffffff 1px solid;
    display: flex;
    text-align: center;
    justify-content: center;
    height: 150px;
}

.bild2 {
    width: 10000px;
}

.grid-item8 {
    display: flex;
    grid-row: 3 / span 4;
    grid-column: 2 / span 6;

    
}