CSS无法对齐绝对位置的img的垂直/水平

<style>
    .parent {
        position: relative;
    }
    .child {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
</style>

<div class="parent">
    <img src="your-image-src" class="child">
</div>

<style>
    .parent {
        display: flex;
        align-items: center; /* 垂直居中对齐 */
        justify-content: center; /* 水平居中对齐 */
    }
</style>

<div class="parent">
    <img src="your-image-src">
</div>

<style>
    .parent {
        display: grid;
        place-items: center; /* 垂直和水平居中对齐 */
    }
</style>

<div class="parent">
    <img src="your-image-src">
</div>

<style>
    .child {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
</style>

<div class="parent">
    <img src="your-image-src" class="child">
</div>