Mainpage.css

.container {
    position: relative;
}

.background-image {
    width: 100%;
    height: auto;
}

.content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.content h1 {
    color: white;
    font-weight: 700;
    box-shadow: 0 30px 90px rgba(128, 127, 222, 0.936);
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f7f7f7;
    margin: 0;
    padding: 0;
}

.chat-container {
    max-width: 500px;
    margin: 50px auto;
    background-color: #ffffff;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(128, 127, 222, 0.936);
    overflow: hidden;
}

.chat-container img {
    width: 25%;
    height: 10%;
}

.chat-box {
    height: 300px;
    overflow-y: scroll;
    padding: 10px;
}

.chat-message {
    border-radius: 8px;
    padding: 10px;
    margin-bottom: 10px;
    clear: both;
}

#uniq {
    background-color: #3b5998;
    padding: 10px;
    margin: 0;
    border-radius: 10px;
    word-wrap: break-word;
    color: #fff;
}

.chat-message.expert {
    background-color: #3b5998;
    color: #fff;
    float: right;
    margin-left: 30%;
}

.chat-message.user {
    background-color: #4caf50;
    color: #fff;
    float: left;
    margin-right: 30%;
}

.chat-input {
    padding: 10px;
    background-color: #f2f2f2;
    border-top: 1px solid #ddd;
}

.chat-input input {
    width: calc(100% - 20%);
    padding: 8px;
    border: none;
    border-radius: 5px;
}

.chat-input button {
    width: 65px;
    padding: 8px;
    border: none;
    background-color: #4caf50;
    color: #fff;
    border-radius: 5px;
    cursor: pointer;
    margin-left: 10px;
}