body {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background: radial-gradient(ellipse at bottom, #1b2735 0%, #090a0f 100%);
  color: #ddd;
  font-family: "Source Sans Pro", sans-serif;
  font-size: 1.2rem;
}

.counter_form {
  position: absolute;
  top: 0;
  left: 0;
  margin: 20px;
}
.counter_form_list {
  margin: 0;
  padding: 0;
}
.counter_form_item {
  display: flex;
  align-items: center;
  list-style: none;
  margin-bottom: 10px;
}
.counter_form_label {
  display: block;
  width: 80px;
}
.counter_form_input_text {
  width: 100px;
  margin: 0;
  padding: 0;
  background: none;
  border: none;
  border-bottom: 1px solid #ddd;
  color: #bbb;
  font-family: "Source Sans Pro", sans-serif;
  transition: 300ms;
}
.counter_form_input_text:focus {
  color: #ffdd40;
  border-color: #ffdd40;
}
.counter_form_button {
  width: 180px;
  height: 30px;
  padding: 0;
  margin: 0;
  border-radius: 4px;
  border: none;
  background: rgba(255, 255, 255, 0.4);
  font-size: 1.2rem;
  font-family: "Source Sans Pro", sans-serif;
  cursor: pointer;
  transition: 300ms;
}
.counter_form_button:hover {
  background: #ffdd40;
}
.counter_monitor {
  color: #ffdd40;
  font-size: 5rem;
}

input:focus {
  outline: none;
}