style.css

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  }
  body {
  background: url(images/viacheslav-bublyk-6WXbPWhT8c8-unsplash.jpg);
  background-color: #25272f;
  background-repeat: no-repeat;
  background-blend-mode: overlay; 
  background-size: cover;
  font-family: Lucida;
  font-size: 1.5rem;
  font-weight: normal;
  color: black;
  position: relative;
  max-width: 500px;
  margin: 0 auto;
  }
  /*Marquee content*/
  h1{
  text-align: center;
  }
  marquee{
  padding-top: 2rem;
  color: cornsilk;
  }

    /*Currency Containe*/
  .container {
  display: flex;
  flex-direction: column;
  margin: 10rem auto;
  padding: 1rem;
  max-height: 18rem;
  border: 1.5px solid rgba(160, 170, 255, 0.35);
  background-color: rgba(160, 170, 255, 0.35);
  position: relative;
  animation-name: bounce-4;
  animation-timing-function: ease;
  animation-duration: 2s;
  animation-iteration-count: 1;
  }
  @keyframes bounce-4 {
  0%   { transform: scale(1,1)    translateY(0); }
  10%  { transform: scale(1.1,.9) translateY(0); }
  30%  { transform: scale(.9,1.1) translateY(-100px); }
  50%  { transform: scale(1,1)    translateY(0); }
  100% { transform: scale(1,1)    translateY(0); }
  }
  h2 {
  margin-bottom: 1rem;
  text-align: center;
  color: cornsilk;
  }
  .inputValue,
  .from,
  .convtValue,
  .to {
  display: block;
  text-align: center;
  width: 100%;
  height: 2rem;
  margin-bottom: 0.5rem;
  padding: 0.38rem 0.8rem;
  color: #495057;
  background-color: #fff;
  border-radius: 0.25rem;
  }