body {
  font-size: 14px;
  color: #333;
  padding: 20px;
  font-family: 'Lato', sans-serif;
}

h2 {
  text-align: center;
  font-size: 30px;
  margin: 20px 0;
  color: #000;
}

.box {
  width: 900px;
  border-radius: 3px;
  padding: 20px;
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  right: 0;
  height: 130px;
  margin: 0;
}

.checkbox {
  position: relative;
  margin-bottom: 20px;
}

.checkbox label {
  padding-left: 30px;
  display: block;
}

.checkbox input {
  top: 0;
  left: 0;
  z-index: 1;
  cursor: pointer;
  opacity: 0;
  position: absolute;
}

.checkbox input:checked + .input-helper:before {
  border-color: #009688;
}

.checkbox .input-helper:before,
.checkbox .input-helper:after {
  position: absolute;
  content: "";
  transition: all 200ms;
}

.checkbox .input-helper:before {
  left: 0;
  border: 2px solid #7a7a7a;
}

.checkbox input {
  width: 15px;
  height: 15px;
}

.checkbox input:checked + .input-helper:before {
  background-color: #009688;
}

.checkbox input:checked + .input-helper:after {
  transform: scale(1);
  opacity: 1;
}

.checkbox .input-helper:before {
  top: 0;
  width: 15px;
  height: 15px;
  border-radius: 2px;
  color: #fff;
}

.checkbox .input-helper:after {
  content: '\2713';
  font-size: 13px;
  left: 3px;
  top: 0x;
  color: #fff;
  transform: scale(0);
  opacity: 0;
}