stylesheet.css

/* Reset CSS (DO NOT DELETE) */
html,
body,
ul,
ol,
li,
h1,
h2,
h3,
h4,
h5,
h6,
p,
div {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Lucida Grande";
  margin: 0;
}

li {
  list-style: none;
}

a {
  text-decoration: none;
}

/* Write your code below */

.top-wrapper {
  padding: 190px 0 250px 0;
  background-image: url(https://prog-8.com/images/html/advanced/top_en.png);
  background-size: cover;
  color: white;
  text-align: center;
}
.top-wrapper h1 {
  opacity: 0.7;
  font-size: 45px;
  letter-spacing: 5px;
  margin-bottom: 10px;
}
.top-wrapper p {
  opacity: 0.7;
  margin-bottom: 3px;
}
.btn-wrapper {
  margin: 20px 0;
}
.btn-wrapper p {
  margin: 10px 0;
}
.signup {
  background-color: #239b76;
}
.facebook {
  background-color: #3b5998;
  margin-right: 10px;
}
.twitter {
  background-color: #55acee;
}
.btn {
  padding: 12px 24px;
  color: white;
  /*display:inline-block;*/
  opacity: 0.8;
  border-radius: 4px;
}
.btn:hover {
  opacity: 1;
}
.fa {
  margin-right: 5px;
}