18/18 100% Оцените код.

article {
width: 470px;
display: inline-table;
border-collapse: separate;
border-spacing: 15px;
border: 5px solid #686868;
background: url(img/wood.png);
margin: 10px;
}
ul {
display: table-row;
}
li {
display: table-cell;
border: 10px solid #686868;
vertical-align: middle;
text-align: center;
padding-top: 15px;
padding-bottom: 15px;
height: 64px;

}
ul:nth-of-type(2) li {
background: url(img/wall-2.png);
}
ul:nth-of-type(1) li {
background: url(img/wall-1.png);
}
li:nth-of-type(3) {
width: 150px;
}
li:nth-of-type(2) {
width: 90px;