index.css

* {
  margin: 0;
  padding: 0;
  list-style: none;
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  background: #fff;
  overflow: hidden;
}

.link {
  position: absolute;
  right: 15px;
  bottom: 15px;
  color: #333;

}

.control {
  width: 440px;
  position: absolute;
  right: 30px;
  top: 30px;
}

.control li {
  margin-bottom: 15px;
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

label {
  font-size: 16px;
  margin-right:15px;
  width:150px;
  flex-shrink: 0;
  cursor: pointer;
  color:#999;
}
.radio-label{
  width:auto;
  display: inline-block;
  display: flex;
  justify-content: center;
  align-items: center;
  color:#333;
}

input {
  display: block;
  width: 100%;
  padding: 6px 12px;
  outline: none;
}

input[type=radio] {
  width:12px;
  height:12px;
  margin-left:10px;
}

input[type=text]:focus {
  border-color: #66afe9;
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 8px rgba(102, 175, 233, .6);
}

input[type="range"] {
  margin-top: 10px;
  -webkit-appearance: none;
  background-color: #e4e7ed;
  height: 4px;
  padding: 0;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  background-color: #fff;
  border: 2px solid #409eff;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  cursor: pointer;
}
.value-span{
  color:#333
}
.btn{
  display: block;
  cursor: pointer;
  width:140px;
  height:30px;
  line-height: 30px;
  color:#333;
  border:1px solid #ddd;
  border-radius: 15px;
  text-align: center;
  text-decoration: none;
  background: #fff;
  margin:30px auto 0;
}

@media screen and (max-width:959px){
  .control{
    width:100%;
    position: absolute;
    left:0;bottom:0;
    top: inherit;
    right: inherit;
    padding:15px;
  }
  .control li{
    flex-wrap: wrap;
  }
}