#app{
    margin-top: 105px;
}

#s1{
    padding: 50px 0;
}

#s1 h1{
    text-align: center;
    margin-bottom: 20px;
}

#s1 h2{
    margin: 50px 0 30px;
    text-align: center !important;
}

#s1 p{
    text-align: center !important;
}