.header {
   text-align: center;
   margin-top: 100px;
}
.manner {
    margin-top: 80px;
}
.main {
    margin-left: 100px;
}
.text {
   padding-top: 20px;
}
.main {
    margin-top: 100px;
  text-align: center;
}
.introduce {
    margin-top: 50px;
    margin-left: 440px;
}
.conter {
    margin-top: 10px; 
}
.footer {
   text-align: center;
   margin-top: 50px;
   color: #707070;
}
.conter {
    margin-right: 55%;
}
.inside {
    padding-top: 20px;
    margin-right: 60%;
}
.insideTwo {
    padding-top: 20px;
    margin-right: 58%;
}
.textow {
    padding-top: 20px;
    margin-right:71px;
}