style.css

.fullscreen {
  width: 100%;
  min-height: 100vh;
}

.content-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

#random-text-holder {
  font-size: 0;
  margin-bottom: 4px;
  margin-left: 4px;
  max-width: 400px;
  display: flex;
  flex-wrap: wrap;
}

#random-text-input {
  font-size: 20px;
  font-family: monospace;
  letter-spacing: 1.6px;
  width: 100%;
}

.character {
  display: inline-block;
  padding: 0;
  margin: 0 0.8px;
  font-size: 20px;
  font-weight: 600;
  font-family: monospace;
}

.character--inactive {
  color: #505050;
}

.character--active {
  animation: text-blink .4s ease-in infinite alternate;
  position: relative;
}

.character--active::before {
  content: "";
  position: absolute;
  width: 10px;
  height: 7px;
  top: -6px;
  background-color: #333333;
  clip-path: polygon(0% 0%, 100% 0%, 50% 100%);
}

.character--success {
  color: #3f8f6a;
  background-color: #0080006c;
}

.character--error {
  color: #882922;
  background-color: #ff000030;
}

@keyframes text-blink {
  from {
    color: #303030;
  }
  to {
    color: #30303055;
  }
}