body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
}

.inbox-container {
    width: 100%;
    max-width: 600px;
    margin: auto;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background-color: #0078d4;
    color: #ffffff;
}

.header-left {
    display: flex;
    align-items: center;
}

.profile-pic {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-right: 10px;
}

.inbox-title {
    font-size: 20px;
    font-weight: bold;
}

.header-right {
    font-size: 16px;
    cursor: pointer;
}

.message {
    display: flex;
    flex-direction: column;
    padding: 10px 20px;
    border-bottom: 1px solid #f0f0f0;
    cursor: pointer;
}

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

.message-header {
    display: flex;
    align-items: center;
}

.message-pic {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-right: 10px;
}

.message-info {
    display: flex;
    justify-content: space-between;
    width: 100%;
}

.message-sender {
    font-weight: bold;
}

.message-time {
    font-size: 12px;
    color: #888888;
}

.message-body {
    margin-top: 5px;
    font-size: 14px;
    color: #555555;
}

.focused {
    background-color: #e8f4fd;
}