SOURCE

<div class="comon_load_toast">
	<div class="comon_toast">
		<span class="comon_toast_text">稍等稍等稍等稍等稍等稍等稍等稍等稍等稍等稍等稍等稍等稍等稍等稍等稍等</span>
	</div>
</div>

.comon_load_toast {
    position: fixed;
    z-index: 30000;
    left: 0px;
    top: 0px;
    right: 0px;
    bottom: 0px;
    background: rgba(0, 0, 0, 0);
}
.comon_toast {
    width: auto;
    max-width: 80%;
    height: auto;
    font-size: 14px;
    border: 1px solid black;
    background: rgba(0, 0, 0, .8);
    color: white;
    border-radius: 5px;
    display: inline-block;
    line-height: 16px;
    word-break: break-all;
    padding: 10px;
    text-align: justify;
    vertical-align: middle;
}
.comon_load_toast:after {
    content: '';
    display: inline-block;
    height: 100%;
    vertical-align: middle;
}
.comon_load_toast {
    pointer-events: none;
    text-align: center;
}