.a1, .a2, .a3, .a4{
font-size:1px; 
overflow:hidden; 
display:block;
}
.a1 {
height:1px; 
background:#888; 
margin:0 5px;
}
.a2 {
height:1px; 
background:#ffffff; 
border-right:2px solid #888; 
border-left:2px solid #888; 
margin:0 3px;
}
.a3 {
height:1px; 
background:#ffffff; 
border-right:1px solid #888; 
border-left:1px solid #888; 
margin:0 2px;
}
.a4 {
height:2px; 
background:#ffffff; 
border-right:1px solid #888; 
border-left:1px solid #888; 
margin:0 1px;
}
.contenta {
background: #ffffff; 
border-right:1px solid #888; 
border-left:1px solid #888;
}
.contenta div {
margin-left: 5px;
}
.b1, .b2, .b3, .b4{
font-size:1px; 
overflow:hidden; 
display:block;
}
.b1 {
height:1px; 
background:#888; 
margin:0 5px;
}
.b2 {
height:1px; 
background:#E4F6FD; 
border-right:2px solid #888; 
border-left:2px solid #888; 
margin:0 3px;
}
.b3 {
height:1px;
background:#E4F6FD; 
border-right:1px solid #888; 
border-left:1px solid #888; 
margin:0 2px;
}
.b4 {
height:2px; 
background:#E4F6FD; 
border-right:1px solid #888; 
border-left:1px solid #888; 
margin:0 1px;
}
.contentb {
background: #E4F6FD; 
border-right:1px solid #888; 
border-left:1px solid #888;
}
.contentb div {
margin-left: 5px;
}
.c1, .c2, .c3, .c4{
font-size:1px; 
overflow:hidden; 
display:block;
}
.c1 {
height:1px; 
background:#888; 
margin:0 5px;
}
.c2 {
height:1px; 
background:#dddddd; 
border-right:2px solid #888; 
border-left:2px solid #888; 
margin:0 3px;
}
.c3 {
height:1px; 
background:#dddddd; 
border-right:1px solid #888; 
border-left:1px solid #888; 
margin:0 2px;
}
.c4 {
height:2px; 
background:#dddddd; 
border-right:1px solid #888; 
border-left:1px solid #888; 
margin:0 1px;
}
.contentc {
background: #dddddd; 
border-right:1px solid #888; 
border-left:1px solid #888;
}
.contentc div {
margin-left: 5px;
}