.colortotips{
    height: 1.9rem;
    line-height: 1.9rem;
    text-align: center;
    border: 1px solid #eee;
    width: calc(100% - 1px);
}
.night .colortotips{
    border: 1px solid #444;
    color: #ccc;
}
#previewColor{
    height: 1.9rem;
    line-height: 1.9rem;
    width: 100%;
}