* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
p {
  margin-bottom: 30px;
}
.main .title {
  font-size: 50px;
  margin-bottom: 30px;
  text-align: center;
}
.main {
  font-size: 25px;
  line-height: 1.5;
  margin: 60px auto 0;
  text-align: center;
  width: 900px;
}
header {
  background: #333;
}
header li a {
  color: white;
}
.hero {
  background: url(../images/coral-reef.jpg) no-repeat center;
  background-size: cover;
  height: 400px;
  position: relative;
}
.hero:after {
  background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, from(transparent), to(white));
  background-image: -moz-gradient(linear, 0% 0%, 0% 100%, from(transparent), to(white));
  background-image: -ms-gradient(linear, 0% 0%, 0% 100%, from(transparent), to(white));
  background-image: -o-gradient(linear, 0% 0%, 0% 100%, from(transparent), to(white));
  bottom: 0;
  content: '';
  height: 300px;
  left: 0;
  position: absolute;
  right: 0;
}
.video1, .video2 {
  margin: 0 auto;
  display: block;
  height: 396px;
  width: 700px;
}
.video1 {
  margin-bottom: 50px;
}
.video2 {
  margin-top: 50px;
}
.solution-list {
  margin-left: 40px;
}

@media screen and (max-width: 900px) {
  .main {
    padding: 0 20px;
    width: 100%;
  }
}