.hero {
    padding: 120px 10%;
    background: #000;
    background-image: url('../image/hero_bg.png');
    background-repeat: no-repeat;
    background-size: cover;       /* stretches to fill area */
    background-position: center;  /* centered */
    background-attachment: fixed; /* optional: parallax effect */
    color: #fff;
    text-align: center;
}
.hero h1 {
    font-size: 64px;
    margin-bottom: 10px;
}
.hero p {
    font-size: 20px;
    margin-bottom: 25px;
}
.hero-buttons .btn {
    padding: 12px 30px;
    background: #fff;
    color: #000;
    border-radius: 30px;
    margin: 10px;
    display: inline-block;
    text-decoration: none;
    font-weight: 600;
}
.btn.outline {
    background: transparent;
    border: 2px solid #fff;
    color: #fff;
}