body {
    font: 100%/1.4 Verdana, Arial, Helvetica, sans-serif;
    background: #42413C;
    margin: 0;
    padding: 0;
    color: #000;
}

.container {
    width: 960px;
    background: #ac9772;
    margin: 0 auto;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #AC9772;
    padding: 20px;
}

.logo {
    float: left;
    height: 165px;
    width: 613px;
}

.frage {
    height: 165px;
    width: 250px;
}

.navigation {
    background-color: #FFFFFF;
    border-top: 1px solid #333333;
    border-bottom: 1px solid #333333;
}

.main-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
}

.main-menu li {
    position: relative;
}

.main-menu a {
    display: block;
    padding: 15px 20px;
    text-decoration: none;
    color: #333333;
}

.main-menu a:hover {
    color: #c55a22;
}

.submenu {
    list-style: none;
    margin: 0;
    padding: 0;
    position: absolute;
    display: none;
    background-color: #c55a22;
    min-width: 150px;
    z-index: 1000;
}

.submenu li {
    position: relative;
}

.submenu a {
    display: block;
    padding: 10px 15px;
    text-decoration: none;
    color: #FFFFFF;
}

.submenu a:hover {
    background-color: #ffffff;
    color: #c55a22;
}

.main-menu li:hover .submenu {
    display: block;
}

.arrow {
    float: right;
    align-self: center;
}

.message-content {
    background-color: #FFFFFF;
    padding: 20px;
    background-image: url('data/message.jpg');
    background-repeat: no-repeat;
    background-position: center bottom;
}

.message-form {
    width: 60%;
    margin: 20px auto;
}

label {
    display: block;
    margin-bottom: 5px;
}

input[type="text"],
input[type="email"],
textarea {
    width: 100%;
    padding: 8px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    box-sizing: border-box;
}

input[type="submit"] {
    background-color: #c55a22;
    color: white;
    padding: 10px 20px;
    border: none;
    cursor: pointer;
}

input[type="submit"]:hover {
    background-color: #a64a1d;
}

#form-messages {
    margin-top: 20px;
    text-align: center;
}

.footer {
    text-align: center;
    background-color: #c65c22;
    padding: 10px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        width: 100%;
    }

    .header {
        flex-direction: column;
        align-items: center;
    }

    .logo, .frage {
        width: 100%;
        height: auto;
    }

    .main-menu {
        flex-direction: column;
        align-items: center;
    }

    .message-form {
        width: 90%;
    }
}