body {
  background-color: #f5f5f5;
}
.header {
  height: 100px;
  display: flex;
  justify-content: flex-start;
  align-items: center;
}
.logo img{
  height: 50px;
}
.title {
  margin: 50px 10px;
  font-size: 30px;
  color: #999;
}
.content {
  background-color: #ffffff;
  height: 70vh;
  text-align: center;
  padding-top: 300px;
  font-size: 80px;
  color: #c8c8c8c8
}
.footer{
  height: 80px;
  text-align: center;
  padding-top: 30px;
}