.message-box {
    padding: 15px 20px;
    margin: 20px 0;
    border-left: 4px solid #007cba;
    background-color: #f0f6fc;
    border-radius: 4px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}
.message-box-info {
    border-left-color: #007cba;
    background-color: #f0f6fc;
}
.message-box-success {
    border-left-color: #46b450;
    background-color: #edfaef;
}
.message-box-warning {
    border-left-color: #ffb900;
    background-color: #fff9e6;
}
.message-box-error {
    border-left-color: #dc3232;
    background-color: #fbeae5;
}
.message-box-content {
    font-size: 16px;
    line-height: 1.5;
    color: #1d2327;
}