用css实现:
<style>
.diamond{
display: inline-block;
width: 14px;
height: 14px;
闭搭 border: 2px solid blue;
轿差拿 transform: rotate(45deg);
}
</style>
<div class="diamond"></div>
用svg实现:
<svg viewBox="0 0 100 100" width="20" height="20">
<polygon points="10 50, 50 10, 90 50, 50 90" fill="none" stroke="blue" stroke-width="10" />
</svg>庆册