.query_hint {
    display: block;
    position: fixed;
    left: 50%;
    top: 50%;
    width: 220px;
    height: 52px;
    margin-left: -110px;
    margin-top: -26px;
    vertical-align: middle;
    float: left;
    z-index: 10000;
    background-color: #eeec;
    border-radius: 5px;
    padding: 10px;
}

    .query_hint img {
        float: left;
        width: 32px;
        height: auto;
    }

    .query_hint span {
        display: block;
        position: absolute;
        width: auto;
        height: auto;
        margin-left: 40px;
        padding: 6px 0;
        line-height: 20px;
    }

.bg {
    display: none;
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: #000;
    opacity: 0.2;
    z-index: 9999;
}

    .bg.small {
        top: 50%;
        left: 50%;
        height: 40px;
        width: 208px;
        margin-left: -104px;
        margin-top: -20px;
        border-radius: 4px;
    }