html tooltip
<span data-tooltip="Tooltip help here!" data-flow="right">CSS Tooltips</span>
<style>
[data-tooltip] {
position: relative;
cursor: pointer;
}
[data-tooltip]:before,
[data-tooltip]:after {
line-height: 1;
font-size: .9em;
pointer-events: none;
position: absolute;
box-sizing: border-box;
display: none;
opacity: 0;
}
[data-tooltip]:before {
content: "";
border: 5px solid transparent;
z-index: 100;
}
[data-tooltip]:after {
content: attr(data-tooltip);
text-align: center;
min-width: 3em;
max-width: 21em;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
padding: 4px 12px;
border-radius: 9px;
background: #4621FF;
color: #FFFFFF;
z-index: 99;
text-shadow: 2px 0px 0px #800000;
}
[data-tooltip]:hover:before,
[data-tooltip]:hover:after {
display: block;
opacity: 1;
}
[data-tooltip]:not([data-flow])::before,
[data-tooltip][data-flow="top"]::before {
bottom: 100%;
border-bottom-width: 0;
border-top-color: #4621FF;
}
[data-tooltip]:not([data-flow])::after,
[data-tooltip][data-flow="top"]::after {
bottom: calc(100% + 5px);
}
[data-tooltip]:not([data-flow])::before, [tooltip]:not([data-flow])::after,
[data-tooltip][data-flow="top"]::before,
[data-tooltip][data-flow="top"]::after {
left: 50%;
-webkit-transform: translate(-50%, -4px);
transform: translate(-50%, -4px);
}
[data-tooltip][data-flow="bottom"]::before {
top: 100%;
border-top-width: 0;
border-bottom-color: #4621FF;
}
[data-tooltip][data-flow="bottom"]::after {
top: calc(100% + 5px);
}
[data-tooltip][data-flow="bottom"]::before, [data-tooltip][data-flow="bottom"]::after {
left: 50%;
-webkit-transform: translate(-50%, 8px);
transform: translate(-50%, 8px);
}
[data-tooltip][data-flow="left"]::before {
top: 50%;
border-right-width: 0;
border-left-color: #4621FF;
left: calc(0em - 5px);
-webkit-transform: translate(-8px, -50%);
transform: translate(-8px, -50%);
}
[data-tooltip][data-flow="left"]::after {
top: 50%;
right: calc(100% + 5px);
-webkit-transform: translate(-8px, -50%);
transform: translate(-8px, -50%);
}
[data-tooltip][data-flow="right"]::before {
top: 50%;
border-left-width: 0;
border-right-color: #4621FF;
right: calc(0em - 5px);
-webkit-transform: translate(8px, -50%);
transform: translate(8px, -50%);
}
[data-tooltip][data-flow="right"]::after {
top: 50%;
left: calc(100% + 5px);
-webkit-transform: translate(8px, -50%);
transform: translate(8px, -50%);
}
[data-tooltip=""]::after, [data-tooltip=""]::before {
display: none !important;
}
</style>