body {
    background-color: black;
    font-family: 'Open Sans', sans-serif;
    color: silver;
    margin-left: 10px;
    margin-right:10px;
}
h1 {
    color: #ff6600;
    font-size: 20px;
}
.top {
    position: relative;
    width: 100%;
    height: 80px;
    background: url(../image/bg.png);
    margin-bottom: 20px;
    margin-top:0px;
}
.logo {
    position: relative;
}
.companyname {
    position: absolute;
    top:30px;
    left: 100px;
    font-size: 16px;
    color: white;
}
.menu_link {
    position: relative;
    width: 100%;
    min-height: 40px;
    margin-bottom: 5px;
    border: solid 1px #666666;
    border-radius: 10px;
    text-align: center;
    line-height: 40px;
    color: #ff6600;
    font-weight: bold;
}
.menu_link:hover {
    cursor: pointer;
}
.info_box {
    position: relative;
    min-height: 200px;
    border: solid 0px white;
    color: silver;
    margin-left: 10px;
    margin-right: 10px;
    margin-bottom: 20px;
    margin-top:0px;
    padding: 5px;
    display:none;
}
.return_link {
    position: relative;
    margin-top: 20px;
}
.return_link a {
    
    font-size: 18px;
    color: #ff6600;
    text-decoration: none;
}