app.component.css

nav {
    display: flex;
    justify-content: space-around;
    height: 50px;
    align-items: center;
    font-family: 'Roboto', sans-serif;
    background-color: #3700b3;
    box-shadow: 0 2px 2px 0 gray;

    a{
        padding:5px 5px 5px 5px;
        margin: 10px;
        color:white;
        text-decoration: none;
        letter-spacing: 0.5px;

        &.active{
            border-bottom: 1.5px solid;
        }
    }
}