try2.css

body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    text-align: center;
    font-family: "Inconsolata", sans-serif;
  }
  section{
    min-height: 100%;
  }
  
  a{
    text-decoration: none;
  }

  li{
    list-style-type: none;
  }

  h1, h2, h3, a{
    font-weight: 500;
    color:black;
    text-transform: uppercase;
  }

  h1, h2{
    color:white;
  }

  h3{
    font-size: 40px;
    padding-top: 8%;
    margin-bottom: 5px;
  }

  h4, p {
    color: #494949;
  }

  hr{
    width: 30px;
    height: 3px;
    background: #494949;
    border: 0;
    margin: 0 auto 40px auto;
  }

  #logo, li, img, .button {transition: all 300ms;}

  .bgimg {
    background-position: center;
    background-size: cover;
    background-image: url(../GitHubOwnWebsite/css/);
    min-height: 75%;
  }
  
  .menu {
    display: none;
  }


  /* header *************************************************/


header{
    width: 100%;
    height: 65px;
    position: fixed;
    top: 0;
    left: 0;
    background: #bea15e;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.7);
    z-index: 1;
}

#logo {
    width: 140px;
    float: left;
    margin: 2px 0 0 10px;
    height: auto;
}

#logo:hover{
    opacity: 0.5;
}

#logo img{
    width: 100%;
}

header nav{
float: right;
margin: 10px 50px 0 0;
}

header nav ul li {
float: left;
margin-right: 10px;
}

header nav ul li a {
    font-size: 26px;
}

header nav ul li:hover{
    padding-top: 5px;
}

/* home ***************************************************/

#home{
    background: url(../GitHubOwnWebsite/css/pic1.jpg);
    background-position: center center;
    background-size: cover;
    background-attachment: fixed;
}

#home h1{
    margin: 240px auto 0 auto;
    font-size: 110px;
}

#home h2{
    margin: 0 auto 0 auto;
    font-size: 25px;
}

#home img{
    width: 32px;
    margin-top: 150px;
    opacity: 0.7;
}

#home img:hover{
    opacity: 1;
}

/* about ***************************************************/

#about img{
    width: 240px;
}

#about img:hover{
    transform: scale(1.1);
}

#about h4{
    font-size: 25px;
}

#about p{
    width: 700px;
    margin: 0 auto 0 auto;
}

/* services ***************************************************/

#services {
    background-color: #f0f0f0;
}

#bilder{
    width: 900px;
    margin: 0 auto 0 auto;
    }

#bilder ul {
    padding: 0;

}

#bilder ul li {
    width: 33.3%;
    float:left;
    margin-bottom: 15px;
}

#bilder img{
    width: 150px;
    height: 150px;
    border-radius: 5px;
}

#bilder img:hover{
    transform: scale(1.1);
    box-shadow: 0 5px 5px rgb(0, 0, 0, 0.3); 
}

/* contact ***************************************************/

form input, textarea {
    
    font-size: 15px;
    margin-bottom: 10px;
    border-radius: 2px;
    border: 2px solid;
    border-color: #494949;
}

form input:first-child{
    margin-top: 10px;
}

form input {
    width: 552px;
    height: 30px;
}

form textarea{
    width: 550px;
    height: 200px;
    resize: none;
}

.input_text{
    color: #494949;
    padding-left: 10px;
}
::-webkit-input-placeholder {color: #999999;}
::-moz-placeholder {color: #999999;}
:-ms-input-placeholder {color: #999999;}
:-moz-placeholder {color: #999999;}

.button{
    background-color: #f0f0f0;
    color: #494949;
    width: 566px;
    height: 50px;
}

.button:hover{
    background-color: #494949 ;
    color: #f0f0f0;
}

/* footer ***************************************************/

footer{
    width: 100%;
    height: 70px;
    background-color:#bea15e;
}

footer p {
    font-size: 17px;
    color: #f0f0f0;
    padding-top: 30px;
}

/* hamburger ***************************************************/
/* Grundlegende Stile */
/* Grundlegende Stile */
.hamburger {
    display: none; /* Standardmäßig nicht angezeigt */
    cursor: pointer;
    position: fixed;
    top: 0;
    right: 0;
    z-index: 2; 
    background-color: transparent;
    border: 0;
    height: 45px;/* Stellt sicher, dass das Hamburger-Menü über anderen Elementen liegt */
    /* Weitere Stile für das Hamburger-Icon */
}

#main-nav {
    /* Stile für die Navigation */
}

#main-nav ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    /* Weitere Stile für die Navigationsliste */
}

#main-nav li {
    padding: 8px;
    margin: 0;
    /* Weitere Stile für die Navigationspunkte */
}

/* Responsives Design */
@media screen and (max-width: 768px) {
    .hamburger {
        display: block; /* Wird auf kleinen Bildschirmen angezeigt */
    }

    header nav{
        margin: 0;
        }

    #main-nav {
        position: fixed;
        top: 0;
        right: 0;
        width: 0;
        height: 100%;
        overflow: hidden;
        transition: width 0.3s ease;
        background:#bea15e;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    #nav-list {
        display: none;
        width: 100%;
        height: 100%;
        flex-direction: column;
        justify-content: center;
        align-items: flex-start;
    }

    #nav-list li {
        display: block;
        width: 100%;
        text-align: left;
    }

    /* Stil für das Menü, wenn es geöffnet ist */
    #main-nav.open {
        width: 250px; /* oder ein anderer Wert, der für Ihr Design geeignet ist */
        display: flex;
    }

    #nav-list.open {
        display: flex;
    }
}