如何向span元素添加提示

[data-tooltip] {
display: inline-block;
position: relative;
cursor: help;
padding: 4px;}/* Tooltip styling */[data-tooltip]:before {
content: attr(data-tooltip);
display: none;
position: absolute;
background: #000;
color: #fff;
padding: 4px 8px;
font-size: 14px;
line-height: 1.4;
min-width: 100px;
text-align: center;
border-radius: 4px;}/* Dynamic horizontal centering */[data-tooltip-position="top"]:before,[data-tooltip-position="bottom"]:before {
left: 50%;
-ms-transform: translateX(-50%);
-moz-transform: translateX(-50%);
-webkit-transform: translateX(-50%);
transform: translateX(-50%);}/* Dynamic vertical centering */[data-tooltip-position="right"]:before,[data-tooltip-position="left"]:before {
top: 50%;
-ms-transform: translateY(-50%);
-moz-transform: translateY(-50%);
-webkit-transform: translateY(-50%);
transform: translateY(-50%);}[data-tooltip-position="top"]:before {
bottom: 100%;
margin-bottom: 6px;}[data-tooltip-position="right"]:before {
left: 100%;
margin-left: 6px;}[data-tooltip-position="bottom"]:before {
top: 100%;
margin-top: 6px;}[data-tooltip-position="left"]:before {
right: 100%;
margin-right: 6px;}/* Tooltip arrow styling/placement */[data-tooltip]:after {
content: '';
display: none;
position: absolute;
width: 0;
height: 0;
border-color: transparent;
border-style: solid;}/* Dynamic horizontal centering for the tooltip */[data-tooltip-position="top"]:after,[data-tooltip-position="bottom"]:after {
left: 50%;
margin-left: -6px;}/* Dynamic vertical centering for the tooltip */[data-tooltip-position="right"]:after,[data-tooltip-position="left"]:after {
top: 50%;
margin-top: -6px;}[data-tooltip-position="top"]:after {
bottom: 100%;
border-width: 6px 6px 0;
border-top-color: #000;}[data-tooltip-position="right"]:after {
left: 100%;
border-width: 6px 6px 6px 0;
border-right-color: #000;}[data-tooltip-position="bottom"]:after {
top: 100%;
border-width: 0 6px 6px;
border-bottom-color: #000;}[data-tooltip-position="left"]:after {
right: 100%;
border-width: 6px 0 6px 6px;
border-left-color: #000;}/* Show the tooltip when hovering */[data-tooltip]:hover:before,[data-tooltip]:hover:after {
display: block;
z-index: 50;}