前端每日實戰：21# 視頻演示如何用純 CSS 創做文本滑動特效的 UI 界面

時間 2019-11-06

標籤前端每日實戰視頻演示如何 css 文本滑動特效界面欄目 CSS 简体版

原文原文鏈接

效果預覽

按下右側的「點擊預覽」按鈕能夠在當前頁面預覽，點擊連接能夠全屏預覽。css

https://codepen.io/comehope/pen/QrxxaWhtml

可交互視頻教程

此視頻是能夠交互的，你能夠隨時暫停視頻，編輯視頻中的代碼。git

請用 chrome, safari, edge 打開觀看。github

https://scrimba.com/p/pEgDAM/cgRgQHrchrome

源代碼下載

請從 github 下載。dom

https://github.com/comehope/front-end-daily-challenges/tree/master/021-a-text-sliding-effect-uiflex

代碼解讀

定義 dom，容器中包含 question 和 answer：動畫

<div>
    <p>
        <span class="question">Who gives you milk?</span>
        <span class="answer">cow</span>
    </p>
</div>

居中顯示：ui

html, body {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: darkcyan;
}

設置文本樣式：spa

p {
    width: 400px;
    height: 2.5em;
    color: gold;
    font-size: 24px;
    border: 2px solid gold;
    line-height: 2.5em;
    text-align: center;
    border-radius: 10px;
    font-family: sans-serif;
    letter-spacing: 2px;
    word-spacing: 2px;
    box-shadow: 5px 5px 10px rgba(0, 0, 0, 0.2);
}

設置答案的樣式：

p {
    position: relative;
}

p span {
    position: absolute;
    width: 100%;
    top: 0;
    left: 0;
}

p .answer {
    color: whitesmoke;
    font-size: 1.1em;
    text-transform: uppercase;
    background: rgba(0, 0, 0, 0.1);
}

增長問題與答案滑動切換的動畫效果：

p {
    overflow: hidden;
}

p span {
    transition: 0.5s ease-out;
}

p .question {
    left: 0;
}

p:hover .question {
    left: 100%;
}

p .answer {
    left: -100%;
}

p:hover .answer {
    left: 0;
}

dom 中再增長 2 個問題：

<div>
    <p>
        <span class="question">Who gives you milk?</span>
        <span class="answer">cow</span>
    </p>
    <p>
        <span class="question">Who likes to eat flies?</span>
        <span class="answer">frog</span>
    </p>
    <p>
        <span class="question">Who have large claws?</span>
        <span class="answer">crab</span>
    </p>
</div>

dom 中增長標題：

<div>
    <h1>Who Am I</h1>
    <p>
        <span class="question">Who gives you milk?</span>
        <span class="answer">cow</span>
    </p>
    <p>
        <span class="question">Who likes to eat flies?</span>
        <span class="answer">frog</span>
    </p>
    <p>
        <span class="question">Who have large claws?</span>
        <span class="answer">crab</span>
    </p>
</div>

設置標題樣式：

h1 {
    font-family: sans-serif;
    color: gold;
    text-align: center;
}

最後，用僞元素增長大問號做爲裝飾背景：

h1 {
    position: relative;
}

h1::after {
    content: '?';
    position: absolute;
    top: -0.35em;
    left: 0;
    font-size: 25em;
    transform: rotate(15deg);
    color: cyan;
    filter: opacity(0.3);
    text-shadow: 10px 10px 10px rgba(0, 0, 0, 0.2);
}

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