body, div, ol, ul, h1, h2, h3, h4, h5, h6, p, th, td, dl, dd, form, iframe, input, textarea, select, label, article, aside, footer, header, menu, nav, section, time, audio, video {margin: 0;padding: 0; }
article, aside, footer, header, hgroup, nav, section, audio, canvas, video, img {display: block; }
body, button, input, select, textarea {font-size: 14px;font-family: "microsoft yahei","Helvetica Neue", Helvetica, sans-serif; }
body{width: 640px;height: 100%;}
iframe, img {border: 0; }
textarea {resize: none; }
em, i {font-style: normal; }
ul, ol, li {list-style: none; }
button, input, select, textarea {font-size: 100%; }
a, a:visited {text-decoration: none; }
table {border-collapse: collapse;border-spacing: 0; }
img {-ms-interpolation-mode: bicubic; }
.m_head{width: 100%;background-color: #fff6df;}
.m_head img{width: 100%;display: block;}

.btn-area{ position:relative;}
.btn-area a{ display:block; width:80px; height:80px; position:absolute; text-indent:-999px;}
.btn-area a.child{ top:160px;left:60px; }
.btn-area a.primary{top:71px;left:187px;}
.btn-area a.middle{top:74px;left:360px;}
.btn-area a.high{top:163px;left:493px;}