html, body {
    height: 100%;
    margin: 0;
}

#webchat {
    height: 100vh;
    width: 100%;
    overflow: auto;
    margin-top: 60px;
}

#chat-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: white;
    padding: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

#start-new-chat {
    float: right;
    padding: 10px 15px;
    background-color: rgb(0, 99, 177);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}