.left{
float: left;
}
.right{
float: right;
}
.clear{
clear: both;
}
.c{
text-align: center;
}
.r{
text-align: right;
}

.textra_img{
display: inline-block;
max-width: 100%;
margin: 0 10px 10px 0;
float: left;
}
.c .textra_img,
.r .textra_img{
  float: none;
}
.textra_img img{
max-width: 100%;
}
.textra_img .description{
font-size: smaller;
text-align: center;
}

ul, ol, blockquote{
padding: 0 0 0 20px;
margin: 0;
}
pre{
background:#e6e6e6;
border:2px solid #ccc;
overflow: auto;
margin-bottom:10px;
display:block;
padding:10px;
}
.textra_table{
border-collapse:collapse;
border:0;
width: 100%;
}
.textra_table th,
.textra_table td{
padding:6px 5px 5px 5px;
border-bottom:1px solid #ddd;
background:transparent;
border-right:1px solid #ddd;
color:#000;
}
.textra_table td:last-child{
border-right:0;
}