.hero {
    height: 90vh;
}
footer {
    text-align: start;
}
.footer {
    background: #000000;
    color: #ffffff;
    padding: 50px;
    text-align: center;
}

@media (min-width: 992px) {
    .about-start {
      
        margin-right: -90px;
        margin-left: 0;
  
    }
    .footer {
    padding: 10px;
}
}