body {
    margin: 0;
    padding: 0;
    background-color: gainsboro;
}

#chat {
    height: 200px;
    list-style: none;
    overflow-y: scroll;
    padding: 0;
    margin: 0;
}

#chat_input,
#chat_input:focus {
    padding: 2px;
    /* border-top: 1px solid black; */
    margin: 0;
    width: 100%;
    border: 0;
    box-sizing: border-box;
    outline: none;
}