sty.css

#header-nav {
  background-color: #ffa6a6;
  border-radius: 0;
  border: solid;
}
#b{
	style="display: flex;
}

.navbar-brand {
  padding-top: 0px;
}
.navbar-brand h1 { 
  font-family: 'Lora', serif; 
  color: black;
  opacity: 0.8;
  font-size: 1.5em;
  text-transform: uppercase;
  font-weight: bold;
  text-shadow: 1px 1px 1px #222;
  margin-top: 0;
  margin-bottom: 0;
  line-height: .75;
}
.navbar-brand a:hover, .navbar-brand a:focus {
  text-decoration: none;
}
.btn {
  border: solid black;
  color: black;
  padding: 12px 16px;
  font-size: 16px;
  cursor: pointer;
}

.btn:hover {
  background-color: RoyalBlue;
}

#h2{
	color: black;
	border: solid;
	text-align: center;
	margin-bottom: 21px;
    margin-top: 21px;
    background: bisque;
}


#fir{
	background: yellow;
    border: solid #fff 4px;
}

#sec{
	background: aquamarine;
	border: solid #fff 4px;
}

#thi{
	background: antiquewhite;
	border: solid #fff 4px;
}

.all{
	text-align: center;
}