body{background:#FFF;}

.max_box{max-width:640px;margin:auto;min-width:320px;position:relative;}
.max_box img{display:block;}


.Plan_img{width:100%;position:relative;}
.Plan_img img{width:100%;height:100%;}
.Plan_img form{width:70%;position:absolute;top:44%;left:50%;margin-left:-35%;height:23%;}
.Plan_img form input{border:0;display:block;height:26%;background:#FFF;border-radius:100px;padding:0 20px;width:100%;margin-bottom:5%;}

.m_button{width:100%;height:26%;}
.m_button img{width:100%;height:100%;}