<section class="radio-section">
  <div class="radio-list">
    <h1>Which Social Media you Often use?</h1>
    <div class="radio-item"><input name="radio" id="radio1" type="radio"><label for="radio1">INSTAGRAM</label></div>
    <div class="radio-item"><input name="radio" id="radio2" type="radio"><label for="radio2">TWITTER</label></div>
    <div class="radio-item"><input name="radio" id="radio3" type="radio"><label for="radio3">LINKEDIN</label></div>
  </div>
</section>

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* {
  margin: 0;
  padding: 0;
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}
a {
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ul {
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body {
  font-family: "Averia Serif Libre", cursive;
  background-color: rgb(19, 18, 21);
  color: #ffffff;
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.radio-section {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}
h1 {
  margin-bottom: 20px;
}
.radio-item [type="radio"] {
  display: none;
}
.radio-item + .radio-item {
  margin-top: 15px;
}
.radio-item label {
  display: block;
  padding: 20px 60px;
  background: #1d1d42;
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  cursor: pointer;
  font-size: 18px;
  font-weight: 400;
  min-width: 250px;
  white-space: nowrap;
  position: relative;
  transition: 0.4s ease-in-out 0s;
}
.radio-item label:after,
.radio-item label:before {
  content: "";
  position: absolute;
  border-radius: 50%;
}
.radio-item label:after {
  height: 19px;
  width: 19px;
  border: 2px solid #524eee;
  left: 19px;
  top: calc(50% - 12px);
}
.radio-item label:before {
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  height: 20px;
  width: 20px;
  left: 21px;
  top: calc(50%-5px);
  transform: scale(5);
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  visibility: hidden;
  transition: 0.4s ease-in-out 0s;
}
.radio-item [type="radio"]:checked ~ label {
  border-color: #524eee;
}
.radio-item [type="radio"]:checked ~ label::before {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}