body {
    font-family: Arial, Helvetica, sans-serif;
    background-image: url("../../images/back-space.jpg");
    background-repeat: repeat;
    backdrop-filter:blur();
    background-attachment: scroll;
    opacity:0.5;
    background-color:transparent;    
}

a:link, ：active, :visited {
    text-decoration: none;
    color: ghostwhite;
}

h1, h2, h3, h4, h5, h6 {
    margin-top:30px;
    margin-left:20px;
    margin-right:20px;
}

p {
    margin-left: 30px;
    margin-right: 30px;
}

.header {
    background-color: #cfe0eb; /*#e0c9c9;*/
    padding: 30px;
    text-align: left;
    font-size: 35px;
    color: darkgoldenrod;
    font-weight: bold;
    height:120px;
}

.scroller {
    display: block;
    position: fixed;    
    background-color: transparent;
    width: 100%;
}

    .scroller > ul {        
        text-align: right;
        padding: 5px;
        display: block;
    }

        .scroller > ul > li {            
            padding-right: 20px;
            display: inline;
            font-size: 18px;
            color: #1b98f6;
            font-weight: bold;
        }

.menu {
    display: inline-block;
    padding: 5px;
    background-color: #795050;
    color: ghostwhite;
    width: 100%;
}

    .menu > ul {
        margin-left: 20px;
        text-align: left;
    }

        .menu > ul > li, li > a {
            padding-left: 20px;
            padding-right: 20px;
            background-color: #795050;
            color: ghostwhite;
            font-size: 20px;
            font-weight: bold;
            display: inline-block;
        }

        .menu > ul > li > a:hover {
            text-decoration: underline;                    
            background-color:#f1c7c7;
            opacity: 0.9;
        }

.line {
    background-color: #795050;
    font-size: 20px;
    font-weight: bold;
    display: block;
    clear: both;   
}

/* Create three unequal columns that floats next to each other */
.column {
    float: left;
    padding: 10px;
    height: 300px; /* Should be removed. Only for demonstration */
}

    /* Left and right column */
    .column.left {
        float:left;
        width: 16%;
    }

    /* Middle column */
    .column.middle {
        margin-left:2%;
        width: 55%;
    }

    .column.right{
        width:20%;
        float:right;
    }

/* Clear floats after the columns */
.row:after {
    content: "";
    display: table;
    clear: both;
}

/* Style the footer */
.footer {
    /*background-color: #cfe0eb;*/ /*#e0c9c9;*/
    padding: 10px;
    text-align: center;
    color: ghostwhite;
    font-weight: 600;
}

/* Responsive layout - makes the three columns stack on top of each other instead of next to each other */
@media (max-width: 800px) {
    .column.left, .column.middle, .column.right {
        width: 100%;
    }
}

.wrapper {  
    margin:20px;
    margin-top:20px;
    background-color: transparent;    
    width: 100%;
    height:1000px;
}