body{
    display:flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: #000;
}

.div_1{
    margin-top: 200px;
}

.btn{
    margin: 10px;
    padding: 10px 20px;
    background: #000;
    color: #fff;
    border: 2px solid #fff;
}

.btn:hover{
    background: #fff;
    color: #000;
    cursor: pointer;
    
}

.link_1{
    color: #fff;
    text-decoration: none;
}

.link_1:hover{
    color: #000;
}

.text{
    color: #fff;
    margin: 10px;
}