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css3基于placeholder表单交互式特效.zip(免费下载)[3 次下载]html代码: |
<!DOCTYPE html> |
<html lang="en" > |
<head> |
<meta charset="UTF-8"> |
<title>CSS Form Interactions</title> |
<meta name="viewport" content="width=device-width, initial-scale=1"> |
<link rel="stylesheet" href="css/style.css"> |
</head> |
<body> |
<section> |
<h1>CSS表单交互</h1> |
<form id="basic-form"> |
<div class="form-group"> |
<input type="text" id="basic-form-first-name" placeholder="名称"/> |
<label for="basic-form-first-name">名称</label> |
</div> |
<div class="form-group"> |
<input type="text" id="basic-form-last-name" placeholder="手机号码"/> |
<label for="basic-form-last-name">手机号码</label> |
</div> |
<div class="form-group"> |
<input type="email" id="basic-form-email" placeholder="邮箱"/> |
<label for="basic-form-email">邮箱<span class="error">输入一个有效的电子邮件地址</span></label> |
</div> |
<button id="basic-form-submit" type="submit">发送信息</button> |
</form> |
</section> |
</body> |
</html> |
style.css里的css样式： |
@import url("https://fonts.googleapis.com/css?family=Lato:400,700"); |
:root { |
--base-vertical-rhythm: 1.5rem; |
--base-transition: 600ms cubic-bezier(0.22, 1, 0.19, 1); |
--button-bg-color: mediumseagreen; |
--button-border-radius: 0.15rem; |
--button-focus-bg-color: seagreen; |
--button-font-size: 1rem; |
--button-text-color: white; |
--form-font-family: 'Lato', sans-serif; |
--input-bg-color: white; |
--input-border-color: #eaeaea; |
--input-border-focus-color: #d8d8d8; |
--input-border-radius: 0.15rem; |
--input-error-color: red; |
--input-padding: 0.75rem; |
--input-placeholder-color: gray; |
--input-text-color: black; |
--input-underline-color: dodgerblue; |
} |
* { |
box-sizing: border-box; |
} |
body { |
display: flex; |
flex-direction: column; |
justify-content: center; |
text-align: left; |
font-family: 'Lato', sans-serif; |
min-height: 100vh; |
padding: 1rem; |
background-color: #fafafa; |
} |
h1 { |
font-size: 1.25rem; |
font-weight: 700; |
line-height: 1.2; |
} |
p { |
font-size: 0.85rem; |
line-height: 1.4; |
} |
section { |
margin: 0 auto; |
width: 100%; |
max-width: 500px; |
} |
section > * + * { |
margin-top: var(--base-vertical-rhythm); |
} |
.form-group { |
position: relative; |
display: flex; |
flex-direction: column-reverse; |
width: 100%; |
border-radius: var(--input-border-radius); |
} |
.form-group + * { |
margin-top: var(--base-vertical-rhythm); |
} |
label { |
position: absolute; |
top: var(--input-padding); |
left: calc(var(--input-padding) + 1px); |
margin-bottom: calc(var(--input-padding) * -1.5); |
font-size: 0.5rem; |
letter-spacing: 0.0025rem; |
text-transform: uppercase; |
z-index: 1; |
pointer-events: none; |
opacity: 0; |
-webkit-transform: translateY(calc(var(--input-padding) / 4)); |
transform: translateY(calc(var(--input-padding) / 4)); |
transition: opacity var(--base-transition), -webkit-transform var(--base-transition); |
transition: opacity var(--base-transition), transform var(--base-transition); |
transition: opacity var(--base-transition), transform var(--base-transition), -webkit-transform var(--base-transition); |
} |
.form-group:focus-within label { |
opacity: 1; |
-webkit-transform: translateY(0); |
transform: translateY(0); |
} |
label .error { |
color: var(--input-error-color); |
opacity: 0; |
transition: opacity var(--base-transition); |
} |
label .error:before { |
content: ' - '; |
} |
input[type="text"], |
input[type="email"] { |
-webkit-appearance: none; |
padding: calc(var(--input-padding) * 1.5) var(--input-padding); |
font-family: var(--form-font-family); |
font-size: 1rem; |
width: 100%; |
color: var(--input-text-color); |
background-color: var(--input-bg-color); |
outline: none; |
border: 1px solid var(--input-border-color); |
border-radius: var(--input-border-radius); |
box-shadow: rgba(0, 0, 0, 0.05) 0 0.5rem 1rem -0.25rem; |
transition: border-color var(--base-transition), box-shadow var(--base-transition), transition var(--base-transition); |
} |
input[type="text"]::-webkit-input-placeholder, |
input[type="email"]::-webkit-input-placeholder { |
color: var(--input-placeholder-color); |
transition: color var(--base-transition), -webkit-transform var(--base-transition); |
transition: color var(--base-transition), transform var(--base-transition); |
transition: color var(--base-transition), transform var(--base-transition), -webkit-transform var(--base-transition); |
transition-delay: 200ms; |
} |
input[type="text"]:-ms-input-placeholder, |
input[type="email"]:-ms-input-placeholder { |
color: var(--input-placeholder-color); |
transition: color var(--base-transition), -webkit-transform var(--base-transition); |
transition: color var(--base-transition), transform var(--base-transition); |
transition: color var(--base-transition), transform var(--base-transition), -webkit-transform var(--base-transition); |
transition-delay: 200ms; |
} |
input[type="text"]::-ms-input-placeholder, |
input[type="email"]::-ms-input-placeholder { |
color: var(--input-placeholder-color); |
transition: color var(--base-transition), -webkit-transform var(--base-transition); |
transition: color var(--base-transition), transform var(--base-transition); |
transition: color var(--base-transition), transform var(--base-transition), -webkit-transform var(--base-transition); |
transition-delay: 200ms; |
} |
input[type="text"]::placeholder, |
input[type="email"]::placeholder { |
color: var(--input-placeholder-color); |
transition: color var(--base-transition), -webkit-transform var(--base-transition); |
transition: color var(--base-transition), transform var(--base-transition); |
transition: color var(--base-transition), transform var(--base-transition), -webkit-transform var(--base-transition); |
transition-delay: 200ms; |
} |
input[type="text"]:focus, |
input[type="email"]:focus { |
border-color: var(--input-border-focus-color); |
box-shadow: none; |
} |
input[type="text"]:focus::-webkit-input-placeholder, |
input[type="email"]:focus::-webkit-input-placeholder { |
color: transparent; |
-webkit-transform: translateX(calc(var(--input-padding) / 2)); |
transform: translateX(calc(var(--input-padding) / 2)); |
transition-duration: 0ms; |
transition-delay: 0ms; |
} |
input[type="text"]:focus:-ms-input-placeholder, |
input[type="email"]:focus:-ms-input-placeholder { |
color: transparent; |
transform: translateX(calc(var(--input-padding) / 2)); |
transition-duration: 0ms; |
transition-delay: 0ms; |
} |
input[type="text"]:focus::-ms-input-placeholder, |
input[type="email"]:focus::-ms-input-placeholder { |
color: transparent; |
transform: translateX(calc(var(--input-padding) / 2)); |
transition-duration: 0ms; |
transition-delay: 0ms; |
} |
input[type="text"]:focus::placeholder, |
input[type="email"]:focus::placeholder { |
color: transparent; |
-webkit-transform: translateX(calc(var(--input-padding) / 2)); |
transform: translateX(calc(var(--input-padding) / 2)); |
transition-duration: 0ms; |
transition-delay: 0ms; |
} |
input[type="text"]:focus, input[type="text"]:not(:placeholder-shown), |
input[type="email"]:focus, |
input[type="email"]:not(:placeholder-shown) { |
padding: calc(var(--input-padding) * 2) var(--input-padding) var(--input-padding); |
} |
input[type="text"]:not(:placeholder-shown):invalid:not(:focus), |
input[type="email"]:not(:placeholder-shown):invalid:not(:focus) { |
color: var(--input-error-color); |
border-color: var(--input-error-color); |
} |
input[type="text"]:not(:placeholder-shown):invalid:not(:focus) + label .error, |
input[type="email"]:not(:placeholder-shown):invalid:not(:focus) + label .error { |
opacity: 1; |
} |
input[type="text"]:not(:placeholder-shown) + label, |
input[type="email"]:not(:placeholder-shown) + label { |
opacity: 1; |
-webkit-transform: translateY(0); |
transform: translateY(0); |
} |
input[type="text"]:-webkit-autofill + label, |
input[type="email"]:-webkit-autofill + label { |
opacity: 1; |
} |
button { |
padding: calc(var(--input-padding) * 1.5) calc(var(--input-padding) * 3); |
width: 100%; |
font-family: var(--form-font-family); |
font-size: var(--button-font-size); |
color: var(--button-text-color); |
background-color: var(--button-bg-color); |
border: none; |
border-radius: var(--button-border-radius); |
box-shadow: rgba(0, 0, 0, 0.05) 0 0.5rem 1rem -0.25rem; |
transition: background-color var(--base-transition), box-shadow var(--base-transition), transition var(--base-transition); |
} |
button:hover, button:focus { |
cursor: pointer; |
outline: none; |
background-color: var(--button-focus-bg-color); |
box-shadow: none; |
-webkit-transform: translateY(1px); |
transform: translateY(1px); |
} |
button:active { |
-webkit-transform: translateY(2px); |
transform: translateY(2px); |
} |
@media (min-width: 400px) { |
button { |
width: auto; |
} |
} |
转自：http://www.yuncode.net/js/3982.html |
css3基于placeholder表单交互式特效.zip(免费下载)[3 次下载]
