body {
    background-color: #f5f5f5;
    color: #000000;
    font-family: "Times New Roman", serif;
    margin: 0;
    padding: 0;
}

.window {
    background-color: #ffffff;
    border: 1px solid #000;
    width: 800px;
    margin: 0 auto;
}

.title-bar {
    background-color: #e0e0e0;
    color: black;
    padding: 5px;
    font-weight: bold;
    display: flex;
    align-items: center;
    border-bottom: 2px solid #000;
    padding-bottom: 10px;
}

.menu-bar span {
    margin-right: 20px;
    cursor: default;
}

.layout {
    display: flex;
}

.sidebar {
    width: 150px;
    background-color: #e0e0e0;
    border-right: 1px solid #a0a0a0;
    padding: 10px;
}

    .sidebar ul {
        list-style: none;
        padding: 0;
    }

    .sidebar li {
        margin-bottom: 10px;
        cursor: default;
    }

.content {
    flex: 1;
    padding: 10px;
}

.message-list {
    border: 1px solid #000;
    font-size: 14px;
}

.message-header, .message {
    display: flex;
    padding: 4px;
    border-bottom: 1px solid #ccc;
}

.message-header {
    font-weight: bold;
    background-color: #f0f0f0;
}

.message:last-child {
    border-bottom: none;
}

a {
    color: inherit;
}

.from, .subject, .date {
    flex: 1;
}