简单的输入框焦点动画效果

栏目: Html · 发布时间: 4年前

核心属性

::placeholder 改变输入框中占位文字的样式

:focus + width + color + text-align 鼠标点击输入框后改变它和占位文字的样式

text-indent: -9999px 隐藏按钮中的文字

:focus + display + background-size 鼠标点击输入框后出现右边的图标按钮

```
<div class="wrapper">
```
```
<div class="middle">
```

<input type="email" value="" name="EMAIL" class="email-field" id="email-field" placeholder="输入文字">

<input type="submit" value="Subscribe" name="subscribe" id="subscribe-button" class="">

```
</div>
```
```
</div>
```

```
body {
```
```
color: #efaa9d;
```
```
background-color: #f05133;
```
```
text-align: center;
```
```
}
```
```
::placeholder {
```
```
color: #f4f2ca;
```
```
opacity: .8;
```
```
}
```
```
.email-field {
```
```
display: inline-block;
```
```
width: 80px;
```
```
padding: .9em 1.8em;
```
```
color: #f4f2ca;
```
```
background-color: #d8492e;
```
```
border: none;
```
```
border-radius: 4px;
```
```
outline: none;
```
```
cursor: pointer;
```
```
text-align: center;
```
```
transition: all .1s linear;
```
```
}
```
```
.email-field:hover {
```
```
background-color: #d0432a;
```
```
}
```
```
.email-field:focus {
```
```
width: 200px;
```
```
color: #efaa9d;
```
```
outline: none;
```
```
text-align: left;
```
```
cursor: inherit;
```
```
}
```
```
#subscribe-button {
```
```
display: none;
```
```
width: 35px;
```
```
height: 35px;
```
```
border: none;
```

background: url(https://pics.codecolor.cn/morphing-input/arrow-circle-on-right.svg) no-repeat;

```
background-size: 13px;
```
```
background-position: 0 1px;
```
```
text-indent: -9999px;
```
```
opacity: .25;
```
```
cursor: pointer;
```
```
transition: all .2s linear;
```
```
}
```
```
#subscribe-button:hover {
```
```
opacity: .33;
```
```
}
```

.email-field:focus + #subscribe-button {

```
display: inline-block;
```
```
background-size: 33px;
```
```
}
```

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