.couplet {
font-weight:700;
color: gray;
margin-bottom: 1em;
}
.inner {
margin-left:auto;
margin-right:auto;
}
.page_imgs img {
height:auto;
width:auto;
border:0.1em solid #000;
border-right:none;
}
a .last_img {
 border-right:0.1em solid #000;
}
.page_imgs .id_one{
width:202px;
height:auto;
}
.page_imgs .id_two{
width:406px;
height:auto;
}
.page_imgs .two{
width:306px;
height:auto;
}
.page_imgs .three{
width:459px;
height:auto;
}
.page_imgs .four{
width:610px;
height:auto;
}
.txt {
clear: left;
margin: 2em 0 1em 0;
}
.figure_num {
float: left;
width: 151px;
text-align:center;
}
.undo {
margin-bottom: 0;
}
p.an_id {
text-align:center;
margin-bottom: 3em;
}
.couplet {
text-decoration:underline;
}