*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  font-size: 15px;
  padding-top: 30px;
}

body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-color: #202A44;
  height: max-content;
  align-self:flex-start;
}

label {
  display: block;
  color: #aaa;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
}

input[type=text] {
  font-size: 1rem;
  text-align: center;
  border-width: 0 0 1px 0;
  border-style: solid;
  background-color: transparent;
  border-radius: 0;
}

#app {
  padding: 20px;
  background-color: rgb(255, 255, 255);
  border-radius: 20px;
}

.row {
  margin-bottom: 20px;
}

.btnClear {
  width: 50px;
  padding: 10px;
  margin: 0 auto;
  text-align: center;
  border: 1px solid #222;
  transition: 0.5s;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
  cursor: pointer;
}
.btnClear:hover {
  background-color: #666;
  color: white;
}

.article {
  padding: 5% 20% 1%;
  color:white;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

a {
  color:yellow;
}