css居中对齐的几种方式

第一种

css

.parent {
            width: 300px;
            height: 300px;
            background: #fff000;
            display: table-cell;
            vertical-align: middle;
            text-align: center;
}
        
.child {
            display: inline-block;
            /* 水平居中对齐 */
            margin: auto;
            border: 1px solid red;
}

html

<div class="parent">
        <div class="child">
            Chauncey
        </div>
        <div class="child">
            Chauncey
        </div>
        <div class="child">
            Chauncey
        </div>
    </div>

第二种

css

.parent {
            position: relative;
            height: 200px;
            width: 200px;
            border: 1px solid red;
        }
        
        .child {
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
        }

html

<div class="parent">
        <div class="child">
            Chauncey
        </div>
    </div>

第三种

css

.parent {
            width: 300px;
            height: 300px;
            background: #ddd;
            position: relative;
        }
        
        .child {
            width: 200px;
            height: 100px;
            background-color: #a0c8ff;
            position: absolute;
            /*竖直方向居中*/
            top: 0;
            bottom: 0;
            /*水平方向居中*/
            left: 0;
            right: 0;
            margin: auto;
            line-height: 100px;
        }

html

<div class="parent">
        <div class="child">
            
        </div>
    </div>

第四种

css

.parent {
			height: 300px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid red;
        }

html

<div class="parent">
        <div class="child">
            Chauncey
        </div>
    </div>