Сегодня предлагаем вам сделать поповер с выводом подсказок с текстом🤓

Задача

Очень полезная вещь, для обеспечения понятности интерфейса, для пользователя, которая показывает подсказки при наведении на компонент в интерфейсе веб приложения. С использованием html и css.

HTML

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link href='style.css' rel='stylesheet' type='text/css'>
</head>
<body>
<main>
    <div>
        <span tooltip="I'm up above it!">Up</span>
    </div>
    <div>
        <span tooltip="Slide to the left" flow="left">Left</span>
        <span tooltip="Slide to the right" flow="right">Right</span>
    </div>
    <div>
        <span tooltip="Get Down." flow="down">Down</span>
    </div>
</main>
</body>
</html>

CSS

[tooltip] {
    position: relative;
}

[tooltip]::before,
[tooltip]::after {
    text-transform: none;
    font-size: .9em;
    line-height: 1;
    user-select: none;
    pointer-events: none;
    position: absolute;
    display: none;
    opacity: 0;
}
[tooltip]::before {
    content: '';
    border: 5px solid transparent;
    z-index: 1001;
}
[tooltip]::after {
    content: attr(tooltip);

    font-family: Helvetica, sans-serif;
    text-align: center;

    min-width: 3em;
    max-width: 21em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 1ch 1.5ch;
    border-radius: .3ch;
    box-shadow: 0 1em 2em -.5em rgba(0, 0, 0, 0.35);
    background: #333;
    color: #fff;
    z-index: 1000;
}

[tooltip]:hover::before,
[tooltip]:hover::after {
    display: block;
}

[tooltip='']::before,
[tooltip='']::after {
    display: none !important;
}

[tooltip]:not([flow])::before,
[tooltip][flow^="up"]::before {
    bottom: 100%;
    border-bottom-width: 0;
    border-top-color: #333;
}
[tooltip]:not([flow])::after,
[tooltip][flow^="up"]::after {
    bottom: calc(100% + 5px);
}
[tooltip]:not([flow])::before,
[tooltip]:not([flow])::after,
[tooltip][flow^="up"]::before,
[tooltip][flow^="up"]::after {
    left: 50%;
    transform: translate(-50%, -.5em);
}

[tooltip][flow^="down"]::before {
    top: 100%;
    border-top-width: 0;
    border-bottom-color: #333;
}
[tooltip][flow^="down"]::after {
    top: calc(100% + 5px);
}
[tooltip][flow^="down"]::before,
[tooltip][flow^="down"]::after {
    left: 50%;
    transform: translate(-50%, .5em);
}

[tooltip][flow^="left"]::before {
    top: 50%;
    border-right-width: 0;
    border-left-color: #333;
    left: calc(0em - 5px);
    transform: translate(-.5em, -50%);
}
[tooltip][flow^="left"]::after {
    top: 50%;
    right: calc(100% + 5px);
    transform: translate(-.5em, -50%);
}

[tooltip][flow^="right"]::before {
    top: 50%;
    border-left-width: 0;
    border-right-color: #333;
    right: calc(0em - 5px);
    transform: translate(.5em, -50%);
}

[tooltip][flow^="right"]::after {
    top: 50%;
    left: calc(100% + 5px);
    transform: translate(.5em, -50%);
}

@keyframes tooltips-vert {
    to {
        opacity: .9;
        transform: translate(-50%, 0);
    }
}

@keyframes tooltips-horz {
    to {
        opacity: .9;
        transform: translate(0, -50%);
    }
}

[tooltip]:not([flow]):hover::before,
[tooltip]:not([flow]):hover::after,
[tooltip][flow^="up"]:hover::before,
[tooltip][flow^="up"]:hover::after,
[tooltip][flow^="down"]:hover::before,
[tooltip][flow^="down"]:hover::after {
    animation: tooltips-vert 300ms ease-out forwards;
}

[tooltip][flow^="left"]:hover::before,
[tooltip][flow^="left"]:hover::after,
[tooltip][flow^="right"]:hover::before,
[tooltip][flow^="right"]:hover::after {
    animation: tooltips-horz 300ms ease-out forwards;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: sans-serif;
    background: #ededed;
}
main {
    flex: 1 1 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
aside {
    flex: none;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #49b293;
    color: #fff;
    padding: 1em;
}
main div {
    text-align: center;
    color: #353539;
}
main span {
    padding: .5em 1em;
    margin: .5em;
    display: inline-block;
    background: #dedede;
}

aside a {
    color: inherit;
    text-decoration: none;
    font-weight: bold;
    display: inline-block;
    padding: .4em 1em;
}