html {margin: 0px;
    min-height: 100%;
   
}
body { margin: 0;
    font-size:16px;
    min-height: 100%;
  }
  div.background {
    background-image: url("classic.phoenix.rgb.light.gray.jpg");
    background-size: 100% auto;
    background-color: silver;
    background-position: top;
    box-sizing: border-box;
    }
div.box {
    background-color: silver;
    opacity: 0.88;
    width: 100%;
    height: auto;
    min-height: 100%;
    padding: 0;
    border: 0;
    margin: 0;
    filter: alpha(opacity=88);
    box-sizing:border-box;
    font-size:100%;
    }
table {
    margin-left: auto;
    margin-right: auto;
    border-collapse: collapse;
    font-size:125%;
        
    }
td {
    text-align: right;
    }
td:nth-child(even) {text-align: left;}


div.box p.scenario {text-align: center;
    margin-left:15%;
    margin-right:10%;
    margin-bottom:0;
    font-size:100%;
}

p   {font-size:100%;}
select {
    font-size: 100%;}
input[type=checkbox]{
    -moz-appearance: none;
    -webkit-appearance:none;
    display: inline-block;
    background: #fff;
    border: 1px solid #555;
    font-size: 16px;
    line-height: 1em;
    margin: 0 0.25em 0 0;
    width: 1.25em; 
    height: 1.25em;
    -webkit-border-radius:0.25em;
    vertical-align: text-top;
    
  /* Double-sized Checkboxes */
  -ms-transform: scale(1); /* IE */
  -moz-transform: scale(1); /* FF */
  -webkit-transform: scale(1); /* Safari and Chrome */
  -o-transform: scale(1); /* Opera */
  padding: 10px;
}
input[type=checkbox]:checked{
    background: maroon;
    content: 'X';
}
label {font-size:100%;}
div.box h1 {margin-left:15%;
    margin-right:10%;
    margin-bottom:0;
    }
div.box h2 {margin-left:15%;
    margin-right:10%;
    margin-bottom:0;
    }
div.box h3 {margin-left:15%;
    margin-right:10%;
    margin-bottom:0;
    }    
div.box p.lower {text-align: left;
    margin-left: 20%;
    margin-right: 15%;
    margin-bottom:0;
   
}

div.box p.footer {text-align: left;
            color:#585252;
            font-size:80%;
            margin-left:20%;
            margin-right:15%;
            margin-bottom:0;
}