css实现搜索按钮点击展开搜索框动画效果代码-html代码-BFW代码库

css实现搜索按钮点击展开搜索框动画效果代码

代码语言：html

所属分类：搜索

代码描述：css实现搜索按钮点击展开搜索框动画效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="zh">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>

* {
    border: 0;
    box-sizing: border-box;
    margin: 0;
    padding: 0
}

:root {
    --bg: #e3e4e8;
    --fg: #17181c;
    --input: #fff;
    --primary: #255ff4;
    --dur: 1s
}

.container,input {
    color: var(--fg);
    font: 1em/1.5 Hind,sans-serif
}

.container {
    background: var(--bg);
    display: flex;
    height: 40vh;
    font-size: calc(16px+(24 - 16)*(100vw - 320px)/(1280 - 320))
}

form,input,.caret {
    margin: auto
}

form {
    position: relative;
    width: 100%;
    max-width: 17em
}

input,.caret {
    display: block;
    transition: all calc(var(--dur) * .5) linear
}

input {
    background: transparent;
    border-radius: 50%;
    box-shadow: 0 0 0 .25em inset;
    caret-color: var(--primary);
    width: 2em;
    height: 2em;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none
}

input:focus,input:valid {
    background: var(--input);
    border-radius: .25em;
    box-shadow: none;
    padding: .75em 1em;
    transition-duration: calc(var(--dur) * .25);
    transition-delay: calc(var(--dur) * .25);
    width: 100%;
    height: 3em
}

input:focus {
    animation: showCaret var(--dur) steps(1);
    outline: transparent
}

input:focus+.caret,input:valid+.caret {
    animation: handleToCaret var(--dur) linear;
    background: transparent;
    width: 1px;
    height: 1.5em;
    transform: translate(0,-1em) rotate(-180deg) translate(7.5em,-0.25em)
}

input::-webkit-search-decoration {
    -webkit-appearance: none
}

label {
    color: #e3e4e8;
    overflow: hidden;
    position: absolute;
    width: 0;
    height: 0
}

.caret {
    background: currentColor;
    bor.........完整代码请登录后点击上方下载按钮下载查看