CT/src/View/ChatPages/messagePage.css

/* layout */
#chat-page #main #message-page .content {
    padding: 0px;

    overflow: hidden;

    display: grid;
    grid-template-rows: 1fr var(--control-height) var(--safe-area-bottom);
}

#message-page #message-container {
    overflow: auto;
}

/* composer */
#message-page #composer {
    border-top: 1px solid var(--border);

    display: flex;
}

#message-page #composer input {
    margin: 0px;

    width: 100%;
    max-width: unset;

    flex: 1;
}