.block-center{
    position: absolute;
    top: 50%;
    left: 50%;
    margin-right: -50%;
    transform: translate(-50%, -50%)
}

.main-menu{
    text-align: left;
}

.main-menu.top{
    background-color: #666666CC;
    padding: 20px 20px 20px 40px;
    border: 2px solid black;
}

.main-menu a{
    font-size: 18px;
    color: #FFFFFF;
    text-decoration: none;
}

.main-menu{
    color: white;
}

.main-menu.submenu a{
    font-size: 14px;
}

body.index-page{
    background-color: #CCCCCC;
    background-image: url('main_bg.png');
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-position: center;
}