Custom CSS is not workin in learnr-tutorial

[FabianGil]

Hello, I have not been able to change the text color in .topicsList, I have used this code:

.topicsList .topic {
    line-height: 20px;
    font-size: 15px;
    padding-left: 10px;
    cursor: pointer;
    color: #f02011;
    background-repeat: no-repeat;
    background-size: 2px 80px;
    background-position: left 100%;
        background-position-y: 100%;
    background-image: url(images/topicProgress.png);
    border-bottom: 1px solid #008080;
    -webkit-transition-property: background-position;
    transition-property: background-position;
    -webkit-transition-duration: 0.25s;
    transition-duration: 0.25s;
}

.topicsList .topic.current {
    color: #ffffff;
    background-color: #ed5b07;
    border: 0px;
}