.btn-container{
    margin-top: 20px;
}
.btn{
    display: block;
    margin-bottom: 10px;
    background: black;
    color: white;
    padding: 10px 15px;
    text-decoration: none;
    border-radius: 5px;
}
.btn:hover{
    background: rgba(0, 0, 0, 0.7);
    color: white;
}