<div class="container">
<div class="parent">
<input class="cbox" type="checkbox" />
<label class="add" for="cbox">Add Comment</label>
<input class="message" type="text" />
</div>
</div>
<footer>Made by <a href="https://twitter.com/sa_sha26">Sasha Tran</a></footer>
@import url('https://fonts.googleapis.com/css?family=Raleway:300,400,500');
@import url('https://fonts.googleapis.com/css?family=Inconsolata');
* {
margin: 0;
padding: 0;
}
body {
background: #e8e8e8;
font-family: 'Raleway', sans-serif;
}
.cbox, .container {
display: flex;
align-items: center;
justify-content: center;
}
.container {
flex-direction: column;
height: 100vh;
}
.parent {
width: 200px;
height: 50px;
position: relative;
}
.parent .add, .parent .cbox, .parent .message {
position: absolute;
}
.parent .add, .parent .message {
color: #f25c54;
}
.parent .add {
top: -3px;
right: 25px;
transition: 0.6s all 0.3s;
letter-spacing: 1px;
}
.message, .cbox {
outline: none;
}
.cbox {
top: -10px;
right: -10px;
width: 30px;
height: 30px;
background: #f25c54;
border-radius: 100%;
-webkit-appearance: none;
z-index: 3;
}
.cbox:before, .cbox:after {
position: absolute;
content: '';
width: 20px;
height: 2px;
background: #e8e8e8;
transition: 0.4s all;
}
.cbox:after {
transform: rotate(90deg);
}
.cbox:checked ~ .message {
width: 300px;
height: 50px;
transition: 0.3s width, 0.3s height 0.2s;
}
.cbox:checked:before, .cbox:checked:after {
transform: rotate(360deg);
transition: 0.4s all;
}
.cbox:checked ~ .add {
font-size: 13px;
transform: translateY(-16px);
transition: 0.3s all;
}
.message {
right: 0;
height: 0;
width: 0;
transition: 0.4s all;
background: none;
border: 2px solid #f25c54;
transition: 0.4s width 0.2s, 0.1s height;
font-size: 30px;
padding-left: 10px;
}
footer {
position: absolute;
bottom: 0;
right: 0;
font-size: 12px;
padding: 10px;
color: #333;
letter-spacing: 1px;
font-family: 'Inconsolata', monospace;
}
footer a {
color: #f25c54;
}
var checked = $(".cbox");
checked.click(function() {
if (checked.prop("checked")) {
$(".add").text("Hit Enter to Submit");
}
if (!checked.prop("checked")) {
$(".message").val("");
$(".add").text("Add Comment");
}
});