*,body {
    margin: 0;
    padding: 0;
}


#heder {
    background-color: rgb(255, 255, 255);
    width: 100%;
    height: 150px;
    border-bottom: 3px solid;
    border-bottom-color: dimgray;
    float: left;
    background-attachment: fixed;
    position: relative;
    background-size: contain;
}


#midle {
    display: flex;
    flex-direction: column;
    align-items: center;

    float: left;
    margin-top: 140px;
}

.container {
    width: 80%;
    margin-top: 20px;

    border: 2px solid black;
    border-radius: 10px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
}

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

.container p {
    text-align: center;
    padding: 10px;
    margin: 0;
}

#navpanel {
    position: fixed;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.5);
    padding: 20px;
    border-radius: 10px;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border: 2px solid black;
    float: left;
}

#navpanel ul {
    list-style-type: none;
    padding: 0;
}

#navpanel ul li {
    margin-bottom: 10px;
}

#navpanel ul li a {
    text-decoration: none;
    color: black;
    background-color: rgba(0, 0, 0, 0.1);
    padding: 10px;
    display: block;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

#navpanel ul li a:hover {
    background-color: rgba(0, 0, 0, 0.2);
}