.content {
    width: 92%;
    height: 750px;
    float: left;
    margin-left: 4%;
    margin-top: 5px;
    border: 1px solid #ccc;
}

.lft_box {
    width: 50%;
    float: left;
    height: 750px;
}

.rg_box p {
    margin-bottom: 20px;    
}

.topimg_1 {
    width: 20px;
    height: 20px;
    background-image: url('../../../../images/exam-arrow.png');
    background-size: 100%;
    display: block;
    float: left;
    margin-right: 5px;
}

.dfstring_1 {
    background: #c2bfbf;
    font-weight: 700;
}

.zwstring_1 {
    display: inline-block;
    width: 10px;
    height: 16px;
    margin: 0 3px;
    background: #444;
    vertical-align: middle;
}

.timu_1 {
    width: 100%;
    float: left;
    margin-bottom: 20px;
    display: none;
    font-size: 16px;
}

#question-title {
    margin: 0 0 18px 0;
    line-height: 22px;
    font-size: 16px;
    position: relative;
}
.title {
    font-size: 24px;
    margin: 6px 0 20px;
    color: #333;
    display: block;
    text-align: center;
}