input radio,改装input单选框样式，单选框input修改默认样式

HTML

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>CSS3实现自定义Checkbox动画DEMO演示</title>

    <link
      rel="stylesheet"
      href="css/style.css"
      media="screen"
      type="text/css"
    />
  </head>

  <body>
    <div class="container">
      <h2>Check it out!</h2>
      <input type="checkbox" id="cbtest" />
      <label for="cbtest" class="check-box"></label>
    </div>
  </body>
</html>

CSS

/* Made by Jimmy Gillam */
html,
body {
  padding: 0;
  margin: 0;
  background-color: #667788;
  color: #efefef;
  font-family: \'Open Sans\';
}

.container {
  box-sizing: border-box;
  padding: 25px;
  text-align: center;
}
.container h2 {
  margin-bottom: 40px;
}

/* Checkmark style starts */
@-moz-keyframes dothabottomcheck {
  0% {
    height: 0;
  }

  100% {
    height: 50px;
  }
}
@-webkit-keyframes dothabottomcheck {
  0% {
    height: 0;
  }

  100% {
    height: 50px;
  }
}
@keyframes dothabottomcheck {
  0% {
    height: 0;
  }

  100% {
    height: 50px;
  }
}
@keyframes dothatopcheck {
  0% {
    height: 0;
  }

  50% {
    height: 0;
  }

  100% {
    height: 120px;
  }
}
@-webkit-keyframes dothatopcheck {
  0% {
    height: 0;
  }

  50% {
    height: 0;
  }

  100% {
    height: 120px;
  }
}
@-moz-keyframes dothatopcheck {
  0% {
    height: 0;
  }

  50% {
    height: 0;
  }

  100% {
    height: 120px;
  }
}
input[type=\'checkbox\'] {
  display: none;
}

.check-box {
  height: 100px;
  width: 100px;
  background-color: transparent;
  border: 10px solid black;
  border-radius: 5px;
  position: relative;
  display: inline-block;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  -moz-transition: border-color ease 0.2s;
  -o-transition: border-color ease 0.2s;
  -webkit-transition: border-color ease 0.2s;
  transition: border-color ease 0.2s;
  cursor: pointer;
}
.check-box::before,
.check-box::after {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  position: absolute;
  height: 0;
  width: 20px;
  background-color: #34b93d;
  display: inline-block;
  -moz-transform-origin: left top;
  -ms-transform-origin: left top;
  -o-transform-origin: left top;
  -webkit-transform-origin: left top;
  transform-origin: left top;
  border-radius: 5px;
  content: \' \';
  -webkit-transition: opacity ease 0.5;
  -moz-transition: opacity ease 0.5;
  transition: opacity ease 0.5;
}
.check-box::before {
  top: 72px;
  left: 41px;
  box-shadow: 0 0 0 5px #667788;
  -moz-transform: rotate(-135deg);
  -ms-transform: rotate(-135deg);
  -o-transform: rotate(-135deg);
  -webkit-transform: rotate(-135deg);
  transform: rotate(-135deg);
}
.check-box::after {
  top: 37px;
  left: 5px;
  -moz-transform: rotate(-45deg);
  -ms-transform: rotate(-45deg);
  -o-transform: rotate(-45deg);
  -webkit-transform: rotate(-45deg);
  transform: rotate(-45deg);
}

input[type=\'checkbox\']:checked + .check-box,
.check-box.checked {
  border-color: #34b93d;
}
input[type=\'checkbox\']:checked + .check-box::after,
.check-box.checked::after {
  height: 50px;
  -moz-animation: dothabottomcheck 0.2s ease 0s forwards;
  -o-animation: dothabottomcheck 0.2s ease 0s forwards;
  -webkit-animation: dothabottomcheck 0.2s ease 0s forwards;
  animation: dothabottomcheck 0.2s ease 0s forwards;
}
input[type=\'checkbox\']:checked + .check-box::before,
.check-box.checked::before {
  height: 120px;
  -moz-animation: dothatopcheck 0.4s ease 0s forwards;
  -o-animation: dothatopcheck 0.4s ease 0s forwards;
  -webkit-animation: dothatopcheck 0.4s ease 0s forwards;
  animation: dothatopcheck 0.4s ease 0s forwards;
}

效果图自己可以根据需要修改样式