HTML
<span class="input input--kozakura">
<input class="input__field input__field--kozakura" type="text" id="input-7" />
<label class="input__label input__label--kozakura" for="input-7">
<span class="input__label-content input__label-content--kozakura" data-content="Name">Text...</span>
</label>
<svg class="graphic graphic--kozakura" width="300%" height="100%" viewBox="0 0 1200 60" preserveAspectRatio="none">
<path d="M1200,9c0,0-305.005,0-401.001,0C733,9,675.327,4.969,598,4.969C514.994,4.969,449.336,9,400.333,9C299.666,9,0,9,0,9v43c0,0,299.666,0,400.333,0c49.002,0,114.66,3.484,197.667,3.484c77.327,0,135-3.484,200.999-3.484C894.995,52,1200,52,1200,52V9z"/>
</svg>
</span>
<span class="input input--kozakura">
<input class="input__field input__field--kozakura" type="text" id="input-8" />
<label class="input__label input__label--kozakura" for="input-8">
<span class="input__label-content input__label-content--kozakura" data-content="Email">Text...</span>
</label>
<svg class="graphic graphic--kozakura" width="300%" height="100%" viewBox="0 0 1200 60" preserveAspectRatio="none">
<path d="M1200,9c0,0-305.005,0-401.001,0C733,9,675.327,4.969,598,4.969C514.994,4.969,449.336,9,400.333,9C299.666,9,0,9,0,9v43c0,0,299.666,0,400.333,0c49.002,0,114.66,3.484,197.667,3.484c77.327,0,135-3.484,200.999-3.484C894.995,52,1200,52,1200,52V9z"/>
</svg>
</span>
<span class="input input--kozakura">
<input class="input__field input__field--kozakura" type="text" id="input-9" />
<label class="input__label input__label--kozakura" for="input-9">
<span class="input__label-content input__label-content--kozakura" data-content="Website">Text...</span>
</label>
<svg class="graphic graphic--kozakura" width="300%" height="100%" viewBox="0 0 1200 60" preserveAspectRatio="none">
<path d="M1200,9c0,0-305.005,0-401.001,0C733,9,675.327,4.969,598,4.969C514.994,4.969,449.336,9,400.333,9C299.666,9,0,9,0,9v43c0,0,299.666,0,400.333,0c49.002,0,114.66,3.484,197.667,3.484c77.327,0,135-3.484,200.999-3.484C894.995,52,1200,52,1200,52V9z"/>
</svg>
</span>
CSS
body {
background: #2196F3;
color: #fff;
font-size: 150%;
padding: 3em 0;
font-family: Arial;
}
.input {
position: relative;
z-index: 1;
display: block;
left: 50%;
margin-left: -175px;
max-width: 350px;
width: calc(100% - 2em);
vertical-align: top;
}
.input__field {
position: relative;
display: block;
float: right;
padding: 0.8em;
width: 60%;
border: none;
border-radius: 0;
background: #fff;
color: #aaa;
font-weight: 400;
font-family: "Avenir Next", "Helvetica Neue", Helvetica, Arial, sans-serif;
-webkit-appearance: none;
}
.input__field:focus {
outline: none;
}
.input--kozakura {
overflow: hidden;
padding-bottom: 1em;
}
.input__field--kozakura {
padding: 0.25em 0em;
margin-top: 1.25em;
width: 100%;
background: transparent;
color: #494E57;
font-size: 1.55em;
opacity: 0;
}
.input__label--kozakura {
width: 100%;
text-align: left;
position: absolute;
pointer-events: none;
overflow: hidden;
padding: 0 0.25em;
-webkit-transform: translate3d(1em, 2.75em, 0);
transform: translate3d(1em, 2.75em, 0);
-webkit-transition: -webkit-transform 0.3s;
transition: transform 0.3s;
}
.input__label-content--kozakura {
color: #fff;
padding: 0.4em 0 0.25em;
-webkit-transition: -webkit-transform 0.3s;
transition: transform 0.3s;
}
.input__label-content--kozakura::after {
content: attr(data-content);
position: absolute;
font-weight: 800;
top: 100%;
left: 0;
height: 100%;
width: 100%;
color: #fff;
padding: 0.25em 0;
text-transform: uppercase;
letter-spacing: 1px;
font-size: 0.85em;
}
.graphic {
position: absolute;
top: 0;
left: 0;
fill: none;
}
.graphic--kozakura {
fill: #494E57;
pointer-events: none;
top: 1em;
bottom: 0px;
height: 4.5em;
z-index: -1;
-webkit-transition: -webkit-transform 0.7s, fill 0.7s;
transition: transform 0.7s, fill 0.7s;
-webkit-transition-timing-function: cubic-bezier(0, 0.25, 0.5, 1);
transition-timing-function: cubic-bezier(0, 0.25, 0.5, 1);
}
.input__field--kozakura:focus,
.input--filled .input__field--kozakura {
-webkit-transition: opacity 0s 0.35s;
transition: opacity 0s 0.35s;
opacity: 1;
}
.input__field--kozakura:focus + .input__label--kozakura,
.input--filled .input__label--kozakura {
-webkit-transition-delay: 0.15s;
transition-delay: 0.15s;
-webkit-transform: translate3d(0, 0, 0);
transform: translate3d(0, 0, 0);
}
.input__field--kozakura:focus + .input__label--kozakura .input__label-content--kozakura,
.input--filled .input__label-content--kozakura {
-webkit-transition-delay: 0.15s;
transition-delay: 0.15s;
-webkit-transform: translate3d(0, -100%, 0);
transform: translate3d(0, -100%, 0);
}
.input__field--kozakura:focus ~ .graphic--kozakura,
.input--filled .graphic--kozakura {
fill: #fff;
-webkit-transform: translate3d(-66.6%, 0, 0);
transform: translate3d(-66.6%, 0, 0);
}
