<div data-attr="readonly" class="card">
  <input class="form-control" type="text" placeholder="Readonly input here…" readonly>
</div>
<div data-attr="disabled" class="card">
  <input class="form-control" type="text" placeholder="Disabled input here…" disabled>
</div>
<div data-attr="enabled" class="card">
  <input class="form-control" type="text" placeholder="Enabled input here…">
</div>
<div data-attr="read-write" class="card">
  <input class="form-control" type="text" placeholder="Read write input here…">
</div>
<div data-attr="contenteditable" class="card">
  <div contenteditable>Read write div element</div>
</div>

body {
  width: 100vw;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 2vw;
  background: #eaeaea;
}
.card {
  border-radius: 8px;
  padding: 40px;
  background: #fff;
  border: 1px solid #aeaeae;
  margin: 10px;
  position: relative;
  
  &::before {
    content: attr(data-attr);
    position: absolute;
    padding: 10px;
    background: linear-gradient(to right, #f36, #f63);
    color: #fff;
    border-radius: 5px;
    top: -25px;
  }
}

div[contenteditable] {
  display: block;
  width: 100%;
  padding: .375rem .75rem;
  font-size: 1rem;
  line-height: 1.5;
  color: #495057;
  background-color: #fff;
  background-clip: padding-box;
  border: 1px solid #ced4da;
  border-radius: .25rem;
  transition: border-color .15s ease-in-out,box-shadow .15s ease-in-out;
}
input:read-only {
  border: solid 2px blue;
}
div[contenteditable]:read-write,
input:read-write {
  border: solid 2px red;
}