material design login

<hgroup>
    <h1><b>Bootdey.com</b></h1>
</hgroup>
<form>
    <div class="group">
        <input type="text"><span class="highlight"></span><span class="bar"></span>
        <label>Name</label>
    </div>
    <div class="group">
        <input type="email"><span class="highlight"></span><span class="bar"></span>
        <label>Email</label>
    </div>
    <button type="button" class="btn-block btn-material">Login
        <div class="ripples buttonRipples"><span class="ripplesCircle"></span></div>
    </button>
</form>

* {
    box-sizing: border-box;
}

body {
    font-family: Helvetica;
    background: #eee;
    -webkit-font-smoothing: antialiased;
}

hgroup {
    text-align: center;
    margin-top: 4em;
}

h1,
h3 {
    font-weight: 300;
}

h1 {
    color: #636363;
}

h3 {
    color: #4a89dc;
}

form {
    width: 380px;
    margin: 2em auto;
    padding: 3em 2em 2em 2em;
    background: #fafafa;
    border: 1px solid #ebebeb;
    box-shadow: rgba(0, 0, 0, 0.14902) 0px 1px 1px 0px, rgba(0, 0, 0, 0.09804) 0px 1px 2px 0px;
}

.group {
    position: relative;
    margin-bottom: 45px;
}

input {
    font-size: 18px;
    padding: 10px 10px 10px 5px;
    -webkit-appearance: none;
    display: block;
    background: #fafafa;
    color: #636363;
    width: 100%;
    border: none;
    border-radius: 0;
    border-bottom: 1px solid #757575;
}

input:focus {
    outline: none;
}


/* Label */

label {
    color: #999;
    font-size: 18px;
    font-weight: normal;
    position: absolute;
    pointer-events: none;
    left: 5px;
    top: 10px;
    transition: all 0.2s ease;
}


/* active */

input:focus ~ label,
input.used ~ label {
    top: -20px;
    transform: scale(.75);
    left: -2px;
    /* font-size: 14px; */
    color: #4a89dc;
}


/* Underline */

.bar {
    position: relative;
    display: block;
    width: 100%;
}

.bar:before,
.bar:after {
    content: '';
    height: 2px;
    width: 0;
    bottom: 1px;
    position: absolute;
    background: #4a89dc;
    transition: all 0.2s ease;
}

.bar:before {
    left: 50%;
}

.bar:after {
    right: 50%;
}


/* active */

input:focus ~ .bar:before,
input:focus ~ .bar:after {
    width: 50%;
}


/* Highlight */

.highlight {
    position: absolute;
    height: 60%;
    width: 100px;
    top: 25%;
    left: 0;
    pointer-events: none;
    opacity: 0.5;
}


/* active */

input:focus ~ .highlight {
    animation: inputHighlighter 0.3s ease;
}


/* Animations */

@keyframes inputHighlighter {
    from {
        background: #4a89dc;
    }
    to {
        width: 0;
        background: transparent;
    }
}


/* Button */
.btn-material {
    position: relative;
    display: inline-block;
    padding: 12px 24px;
    margin: .3em 0 1em 0;
    width: 100%;
    vertical-align: middle;
    color: #fff;
    font-size: 16px;
    line-height: 20px;
    -webkit-font-smoothing: antialiased;
    text-align: center;
    letter-spacing: 1px;
    background: transparent;
    border: 0;
    border-bottom: 2px solid #3160B6;
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-material:focus {
    outline: 0;
}


/* Button modifiers */
.btn-material {
    background: #4a89dc;
    text-shadow: 1px 1px 0 rgba(39, 110, 204, .5);
}

.btn-material:hover {
    background: #357bd8;
}


/* Ripples container */
.ripples {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: transparent;
}


/* Ripples circle */

.ripplesCircle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
}

.ripples.is-active .ripplesCircle {
    animation: ripples .4s ease-in;
}


/* Ripples animation */

@keyframes ripples {
    0% {
        opacity: 0;
    }
    25% {
        opacity: 1;
    }
    100% {
        width: 200%;
        padding-bottom: 200%;
        opacity: 0;
    }
}