HTML
<div class="toast-container">
<div class="toast">测试十二个字提交成功状态</div>
</div>
CSS
.toast-container {
position: fixed;
100%;
height: 100%;
left: 100%;
top: 100%;
}
.toast {
position: absolute;
top: -50%;
left: -50%;
transform: translate(-50%, -50%);
auto;
max- 12em;
padding: 13px 16px;
font-size: 14px;
color: #ccc;
background-color: rgba(37, 38, 45, 0.9);
border-radius: 2px;
}