居中CSS形状和文本时遇到麻烦

Question

我已将代码与CSS放在jsfiddle中……

https://jsfiddle.net/8oafjzrm/1/

我有4个圆圈，我想以其标题为中心，其中的标签也应以该形状为中心。我似乎无法使其按需运行。我试图将圆内的标签移到其自己的div，但随后完全移开了。这是html ...

  <div class="container-fluid">
        <div class="circles">
            <div class="row">
                <div class="col-md-6">
                    <div class="circle-title">Total Users</div>
                    <div class="circle"></div>
                    <div class="circle-text">6</div>
                </div>
                <div class="col-md-6">
                    <div class="circle-title">Active Users</div>
                    <div class="circle">6</div>
                </div>
            </div>
            <div class="row">
                <div class="col-md-6">
                    <div class="circle-title">Total Logged</div>
                    <div class="circle">2,497</div>
                </div>
                <div class="col-md-6">
                    <div class="circle-title">Overall</div>
                    <div class="circle">76%</div>
                </div>
            </div>
        </div>
    </div>

我正在尝试的css可能超出了我的需要，但是我只是想尝试一种解决方案...

.circle {
    height: 300px;
    width: 300px;
    background-color: #d6d6d6;
    border-radius: 50%;
    line-height: 100px;
}

.circle-text {
    text-align: center;
    color: white;
    font-size: 7.5em;
    font-weight: bold;
    position: absolute;
    padding: 0;
    margin: 0 auto;
}

.circle:before {
    height: 0px;
    width: 0px;
    line-height: 100px;
    text-align: center;
    position: absolute;
}


.circle-title {
    color: #653487;
    font-size: 30px;
    font-weight: bold;
    text-align: center;
    padding: 30px;
}