.wordslink {
    color: #000;
    border-bottom: 1px solid #ccc;
}
.wordslink:hover {
    border-bottom-color: #000;
}

.exp { font-size: 11px; }

@media only screen (max-device-width: 640px) {
    .sp-shrink { display: none; }
    .sp-expand { display: inline; }
    .sp-re-shrink { display: inline; }
    html body.detail #detailNav { display: none !important; }
}

@media screen and (min-width: 668px){
    .sp-shrink { display: inline; }
    .sp-expand { display: none; }
    .sp-re-shrink { display: none; }
}