header{
    padding: 100px 25px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 50px;
    flex-wrap: wrap;

}
header-text{
    width: 850px;
}
.circle{
    height: 500px;
    width: 500px;

    max-height: 80vw;
    max-width: 80vw;

    overflow:hidden ;
    display: flex;
    justify-content: center;
    align-items: center;
}
.circle img{
    height: 100%;
}
nav{
    margin-bottom: 120px;
    
}
nav ul{
    list-style: none;
    display: flex;
    gap: 20px;
    

}
nav a{
    color: #c7c9cc;
    text-decoration: none;

}
nav a:hover{
    color:aliceblue
}
#toggle_button{
    display: none;
}
label[for="toggle_button"]{
    display: none;
} 
label[for="toggle_button"] span{
    font-size: 40px;
}

@media(max-width:800px) {
    nav{
        position: absolute;
        top: 0;
        left: 0;
        background: var(--secondary-hintergrund-color);
        padding: 15px;
        border-radius: 0 0 25px 0;
    }
  nav ul{
    display: none;
    flex-direction: column;
  }
  #toggle_button:checked ~ul {
    display: flex;
  }
  label[for="toggle_button"] {
    display: block;
  }
}