.timeline-container{
    top: 10px;
    left: 400px;
    height: 100px; 
    width: 500px; 
    background-color: yellow; 
    position: absolute;

    .timeline{
        height: 50px; 
        width: 500px;
        bottom: 0px; 
        background-color: grey;
        position: absolute; 
        
    }
    button{
        height: 30px; 
        width: 100px; 
        font-size: 1em; 
        position:relative; 
    }
}