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

body {
    height: 100vh;
    font-family: Arial, Helvetica, sans-serif;

    background-image: url("background.jpg");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}


/* leichte Abdunklung über dem Bild */
.overlay {
    width: 100%;
    height: 100vh;

    display: flex;
    justify-content: center;
    align-items: center;

    background: rgba(0,0,0,0.35);
}


.kontakt-box {
    width: 90%;
    max-width: 500px;

    background: rgba(255,255,255,0.95);

    padding: 40px;

    border-radius: 12px;

    box-shadow: 
        0 15px 40px rgba(0,0,0,0.3);
}


h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}


input,
textarea {

    width: 100%;

    padding: 14px;

    margin-bottom: 15px;

    border: 1px solid #ccc;

    border-radius: 8px;

    font-size: 16px;

    font-family: inherit;
}


textarea {
    resize: vertical;
}


button {

    width: 100%;

    padding: 14px;

    background: #0066cc;

    color: white;

    border: none;

    border-radius: 8px;

    font-size: 17px;

    cursor: pointer;

    transition: 0.3s;
}


button:hover {

    background: #004c99;

}