.yellowbox {
display: block;
background-color: #fdf498;
border: 3px;
border-style: solid;
border-color: #000;
padding: 5px;
font-size: 125%;
height: 100%;
width: 100%;
margin-left: auto;
margin-right: 30%;
margin-top: 25px;
margin-bottom: 25px;
text-align: left;
clear: both;
float: left;
}


h2, h3, h4, h5 {
text-align:center;
font-weight: bold;
background: #000080;
color: #fff;
padding: 5px;
margin-left: auto;
margin-right: auto;
margin-bottom: 25px;
margin-top: 25px;
}

table th, td { 
border: 2px;
border-style: solid;
border-color: #000;
background-color: #fdf498;
border-collapse: collapse;

}