body {
    font-family: Arial, sans-serif;
    margin: 20px;
}

h1 {
    margin-bottom: 20px;
}

#controls {
    margin-bottom: 15px;
}

button {
    padding: 6px 12px;
    margin-right: 5px;
    font-size: 0.9em;
}

form {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-top: 8px;
}

input[type="text"],
textarea {
    width: 100%;
    padding: 6px;
    box-sizing: border-box;
    margin-top: 4px;
    font-size: 1em;
}

#chatbox {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid #ccc;
    padding: 10px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 6px;
    border-bottom: 1px solid #ddd;
    text-align: left;
    font-size: 0.9em;
}

.incoming {
    background-color: #f9fff9;
}

.outgoing {
    background-color: #f9f9ff;
}

.incoming td:first-child,
.outgoing td:first-child {
    width: 130px;
    white-space: nowrap;
}

.incoming td:nth-child(2),
.outgoing td:nth-child(2) {
    width: 24px;
    text-align: center;
}