<Jumbotron> may be render error

`.jumbotron` appears 2 times:
```css
    padding: 2rem 1rem;
    margin-bottom: 2rem;
    background-color: #e9ecef; /* wrong here */
    border-radius: .3rem;
```

```css
    padding:70px 30px 70px 30px;
    margin:0px auto;
    background: #9575CD ;
    color:floralwhite;
```
which the 1st `background-color` overwrites the 2nd one and is wrong color value.