对齐浮动div底部的按钮

Question

我有一个带有图块的概述页面，我使用matchheight库来动态确定行的高度。现在我想对齐div底部的“更多”按钮，使其看起来不像在较小屏幕上的屏幕截图那样混乱。

我尝试使用“bottom：20px”和“left：40％”按钮“position：absolute”，但这会导致响应问题。在某些分辨率上没问题，但在其他分辨率上，按钮距离右侧太远。

我是否可以以一种很好的方式解决这个问题而无需为每个分辨率使用media属性？

/* Block: Overview */
#overview {
    padding-top: 50px;
    width: 100%;
}
.overview {
    text-align: center;
    padding-bottom: 50px;
}
.overview img {
    width: 100%;
    vertical-align: middle;
    padding-bottom: 30px;
}
.card-title {
    text-align: center;
    letter-spacing: -1px;
    font-weight: 600;
    font-size: 20px;
}
.card-subtitle {
    margin-bottom: 0;
    font-style: italic;
    font-weight: 400;
    font-size: 15px;
    font-family: "Lora", serif;
    color: #cccccc;
    margin-top: -1rem;
    line-height: 1.7857;
    padding-bottom: 1rem;
    text-align: center;
}
.btn-card {
    background-color: #cccccc;
    border-color: #404040;
    color: #404040;
    letter-spacing: 2px;
    padding: 10px 20px;
    horiz-align: center;
    position: relative;
    margin-bottom: 0;
}
.btn-card:hover {
    background-color: #ffffff;
    color: #404040;
    border-color: #404040;
    letter-spacing: 2px;
    padding: 10px 20px;
}

<div class="col-sm-3 overview row-eq-height">
            <div class="col-sm-12 text-center wow fadeInLeft">
                <img alt="Heavy Entertainment Show" src="/images/discography/the-heavy-entertainment-show-1.jpg">
            </div>
            <h3 class="card-title">Heavy Entertainment Show</h3>
            <h4 class="card-subtitle">November 4<sup>th</sup>, 2016</h4>
            <a href="/album/the-heavy-entertainment-show/" title="Show details of Heavy Entertainment Show">
                <button class="btn btn-card">MORE</button>
            </a>
        </div>
        <div class="col-sm-3 overview row-eq-height">
            <div class="col-sm-12 text-center wow fadeInLeft">
                <img alt="Under the Radar Vol 1" src="/images/discography/under-the-radar-vol-1-1.jpg">
            </div>
            <h3 class="card-title">Under the Radar Vol 1</h3>
            <h4 class="card-subtitle">December 1<sup>st</sup>, 2014</h4>
            <a href="/album/under-the-radar-vol-1/" title="Show details of Under the Radar Vol 1">
                <button class="btn btn-card">MORE</button>
            </a>
        </div>
        <div class="col-sm-3 overview row-eq-height">
            <div class="col-sm-12 text-center wow fadeInLeft">
                <img alt="Swings Both Ways" src="/images/discography/swings-both-ways-1.jpg">
            </div>
            <h3 class="card-title">Swings Both Ways</h3>
            <h4 class="card-subtitle">November 18<sup>th</sup>, 2013</h4>
            <a href="/album/swings-both-ways/" title="Show details of Swings Both Ways">
                <button class="btn btn-card">MORE</button>
            </a>
        </div>
        <div class="col-sm-3 overview row-eq-height">
            <div class="col-sm-12 text-center wow fadeInLeft">
                <img alt="Take the Crown" src="/images/discography/take-the-crown-1.jpg">
            </div>
            <h3 class="card-title">Take the Crown</h3>
            <h4 class="card-subtitle">November 2<sup>nd</sup>, 2012</h4>
            <a href="/album/take-the-crown/" title="Show details of Take the Crown">
                <button class="btn btn-card">MORE</button>
            </a>
        </div>

Answer 1

这是正确的解决方案，添加了“transform：translateX（-50％）;”对齐。谢谢你的帮助！

.btn-card {
    background-color: #cccccc;
    border-color: #404040;
    color: #404040;
    letter-spacing: 2px;
    padding: 10px 20px;
    position: absolute;
    bottom: 0;
    left: 50%;
    transform:translateX(-50%);
    margin-bottom: 20px;