使用css在父div中垂直对齐图像

Thi*_*its 6 html css vertical-alignment

所以我试图在容器div中垂直对齐图像.我尝试添加vertical-align:middle; 没有运气的父母div.

    <div class="contributor_thumbnail"><img src="image.jpg"></div>
    <div class="contributor_thumbnail"><img src="image.jpg"></div>

.contributor_thumbnail {

    position: relative;
    display: block;
    float: left;
    width: 150px;
    height: 150px;
    line-height: 100%;
    text-align: center;
    margin-right: 15px;
    margin-bottom: 15px;
    padding: 5px;
    vertical-align: middle;
    border: 1px solid #bbbbbb;
    border-top: 1px solid #333;
    border-left: 1px solid #333;

}
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Zoi*_*erg 6

我要做的是将图像设置为背景图像.

.contributor_thumbnail {
    /* Background image instead of using and img tag */
    background: url(image.jpg) center center no-repeat;
    position: relative;
    display: block;
    float: left;
    width: 150px;
    height: 150px;
    line-height: 100%;
    text-align: center;
    margin-right: 15px;
    margin-bottom: 15px;
    padding: 5px;
    border: 1px solid #bbbbbb;
    border-top: 1px solid #333;
    border-left: 1px solid #333;

}
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