html {
  box-sizing: border-box;
  height: 100%;
  font-size: 10px;
}

*, *::before, *::after {
  box-sizing: inherit;
}

body {
  display: flex;
  text-align: right;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  color: #0f273d;
  font-family: 'XBRoyaBold','Lato', sans-serif;
}

h3 {
  font-size: 2.5rem;
  font-weight: bold;
}

.swappy-radios label {
  display: block;
  position: relative;
  padding-right: 4rem;
  margin-bottom: 1.5rem;
  cursor: pointer;
  font-size: 2rem;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
  color: #555;
}
.swappy-radios label:hover input ~ .radio {
  opacity: 0.8;
}
.swappy-radios input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}
.swappy-radios input:checked ~ span {
  color: #0bae72;
  transition: color .5s;
}
.swappy-radios input:checked ~ .radio {
  background-color: #0ac07d;
  opacity: 1 !important;
}
.swappy-radios input:checked ~ .radio::after {
  opacity: 1;
}
.swappy-radios .radio {
  position: absolute;
  top: 0;
  right: 0;
  height: 2.5rem;
  width: 2.5rem;
  background: #c9ded6;
  border-radius: 50%;
}
.swappy-radios .radio::after {
  display: block;
  content: '';
  position: absolute;
  opacity: 0;
  top: .5rem;
  left: .5rem;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: #fff;
}