body {
  height: 100vh;
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 16px;
  box-sizing: border-box;
  color: #333;
  font-family: "Roboto", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

#logo {
  width: 220px;
  cursor: pointer;
}

#fileInput {
  display: none;
}

.hidden {
  display: none !important;
}

.main-box {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: center;
}

#currentWord {
  font-size: 40px;
  text-align: center;
}

.btn {
  background-color: #fff;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 0 20px;
  text-transform: uppercase;
  font-weight: 500;
  font-size: 16px;
  color: inherit;
  font-family: inherit;
  letter-spacing: 0.0892857em;
  height: 43px;
  transition: backround-color 0.6s ease;
}

.btn:active {
  background-color: #f5f5f5;
}

.btn:focus {
  outline: 1px dashed #ccc;
  outline-offset: -4px;
}