body{
  margin: 0;
  background-color: #F5F5FB;
  color: #333;
  font: 14px Helvetica Neue, Helvetica, PingFang SC, Tahoma, Arial, sans-serif;
}
.app{
  margin: 0 auto;
  max-width: 1200px;
}
.title{ 
  display: flex;
  align-items: center;
  margin-bottom: 5px;
  border-bottom: gold solid 1px;
}
.logo{
  width: 40px; 
  height: 40px;
}
.detail{
  margin-top: 10px;
  margin-left: 20px;
}

.steps{
  margin: 100px 200px;
  display: flex;
  justify-content: space-around;
  align-items: baseline;
  font-size: 28px;
  color: brown;
}

.header{
  font-size: 15px;
  margin-top: 40px;
  margin-left: 10px;
  font-weight: bolder;
  text-decoration: underline;
}
.content{
  margin-top: 20px;
  margin-left: 20px;
}
.tail{
  margin: 10px auto;
  width: 400px;
  height: 200px;
  display: flex;
  justify-content:space-between;
  align-items: end;
}
.tail a{
  text-decoration: none;
  color: black;
}