style.css

.main

{

background:#1abc9c;

padding: 30px;

}

.main p

{

padding: 30px;

color: white;

font-size: 30px;

}

.second

{

background: #474e5d;

color: #fff;

height: 270px;

}

.btn{}

.o{padding: 30px; font-size: 40px;}

.second p{font-size: 15px; color: #fff;}

.hello{margin: 40px; font-size: 35px}

.row{margin: 40px;}

footer

{

background: #2f2f2f;

height: 200px;

width: 100%;

}

.ooo

{

color: #fff;

padding-top: 80px;

}

.navbar

{

background: green;

padding: 50px;

transition: 1s;

paddin

}

.nav-link

{

color: blue;

}

.nav.navbar-nav.navbar-right li a {

    color: blue;

}

.red

{

background: red;

padding:20px;

}