HI必圈

divMain {
width: 800px;
margin: 20px auto;
text-align: center;
background-color: #fff;
padding: 20px;
border-radius: 10px;
}

a {
color: #4662D9;
text-shadow: 2px 2px 2px rgba(0, 0, 0, 0.1);
}

• {
  text-align: center;
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  }
  

body {
background-color: #fff;
font-size: 12px;
font: 12px/1.5 arial, serif;
margin: 0 auto;
padding: 0;
max-width: 800px;
-webkit-font-smoothing: antialiased;
display: block !important;
}

#header {
width: 100%;
font-size: 2.0rem;
overflow: hidden;
}