html {
  font-size: 62.5%;

}
* {
  margin: 0;
  padding: 0;
  font-family: "微软雅黑";
  font-size: 1.6rem;
}
a {
  text-decoration: none;
  color: white;
}
li {
  list-style: none;
}
#main {
  width: 60%;
  margin: 0 auto;
  box-shadow:0 0 10px grey;
  padding: 30px 10px;
}
a:hover {
  cursor: pointer;
}
.b {
  background: #fff3e1;
}
.img {
  position: absolute;
  top:3px;
  left:3px;
}
.div1 {
  width: 100%;
  background: #4ca9aa;
  position: relative;
  padding: 0 20px;
  box-shadow: 2px 2px 3px;  
  padding-top: 1px;
}
.o {
  margin-bottom: 30px;
}
.top {
  margin-bottom: 40px;
}
.mydiv h1 {
  text-align: center;
  margin-top: 20px;
  font-size: 20px;
  font-weight: bolder;
  color: white;
  padding-bottom: 10px;
  border-bottom: 1px solid white;
}
.text {
  text-align: center;
  margin-bottom: 10px;
  padding: 0;
  margin: 0;
}