options.css

label {
  display: block;
  font: 1rem 'Fira Sans', sans-serif;
}

input,
label {
  margin: .4rem 0;
}

.button {
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
  -webkit-transition-duration: 0.4s;
  /* Safari */
  transition-duration: 0.4s;
  border-radius: 8px;
}

.buttonSubmit {
  background-color: #4CAF50;
}

.buttonSubmit:hover {
  background-color: #4CAF50;
  box-shadow: 0 12px 16px 0 rgba(0, 0, 0, 0.24), 0 17px 50px 0 rgba(0, 0, 0, 0.19);
}
.buttonClear{
  background-color: #008CBA;

}
.buttonClear:hover {
  background-color: #008CBA;
  box-shadow: 0 12px 16px 0 rgba(0, 0, 0, 0.24), 0 17px 50px 0 rgba(0, 0, 0, 0.19);
}

.textarea {
  display: block;
  width: 50%;
  padding: 10px;
  overflow: hidden;
  resize: both;
  min-height: 40px;
  line-height: 20px;
  border-radius: 5px;
  border: 1px solid #ccc;
  box-shadow: 1px 1px 1px #999;
}

.textarea[contenteditable]:empty::before {
  content: "672346917:ava\A 672353429:bella\A 351609538:carol\A 672328094:diana\A 672342685:eileen";
  color: rgb(148, 148, 148);
  white-space: pre;
}