纯CSS buttons

效果：Demo

HTML：

<h1>Pure Css Button</h1>

    <div class="main">
        <div class="sub-main">
            <button class="button-one">Tap Me</button>
        </div>
        <div class="sub-main">
            <button class="button-two"><span>Hover Me</span></button>
        </div>
        <div class="sub-main">
            <button class="button-three">Click Me</button>
        </div>
    </div>

CSS：

*{margin: 0px; padding: 0px}

body{
  background:#2c3e50;
  font-family: 'Open Sans', sans-serif;
}

h1, button{
  color:#fff;
  text-align: center;
  padding: 20px;
}

.main{
  width: 100%;
}

.sub-main{
  width: 30%;
  margin:22px;
  float: left;
}

.button-one, .button-two, .button-three{
  text-align: center;
  cursor: pointer;
  font-size:24px;
  margin: 0 0 0 100px;
}



/*Button One*/
.button-one {
  padding:20px 60px;
  outline: none;
  background-color: #27ae60;
  border: none;
  border-radius:5px;
  box-shadow: 0 9px #95a5a6;
}

.button-one:hover{
  background-color: #2ecc71;
}

.button-one:active {
  background-color: #2ecc71;
  box-shadow: 0 5px #95a5a6;
  transform: translateY(4px);
}


/*Button Two*/
.button-two {
  border-radius: 4px;
  background-color:#d35400;
  border: none;
  padding: 20px;
  width: 200px;
  transition: all 0.5s;
}


.button-two span {
  cursor: pointer;
  display: inline-block;
  position: relative;
  transition: 0.5s;
}

.button-two span:after {
  content: '»';
  position: absolute;
  opacity: 0;
  top: 0;
  right: -20px;
  transition: 0.5s;
}

.button-two:hover span {
  padding-right: 25px;
}

.button-two:hover span:after {
  opacity: 1;
  right: 0;
}


/*Button Three*/
.button-three {
    position: relative;
    background-color: #f39c12;
    border: none;
    padding: 20px;
    width: 200px;
    text-align: center;
    -webkit-transition-duration: 0.4s; /* Safari */
    transition-duration: 0.4s;
    text-decoration: none;
    overflow: hidden;
}

.button-three:hover{
   background:#fff;
   box-shadow:0px 2px 10px 5px #97B1BF;
   color:#000;
}

.button-three:after {
    content: "";
    background: #f1c40f;
    display: block;
    position: absolute;
    padding-top: 300%;
    padding-left: 350%;
    margin-left: -20px !important;
    margin-top: -120%;
    opacity: 0;
    transition: all 0.8s
}

.button-three:active:after {
    padding: 0;
    margin: 0;
    opacity: 1;
    transition: 0s
}

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