src/index.css

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: #8b008bcf;
}

code {
  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
    monospace;
}

h1 {
  color: #FEFBEA;
}

b {
  color: #FEFBEA;
}

.square {
  height: 640px;
  width: 640px;
  background-color: #555;
}

.rcorners {
  border-radius: 25px;
  border: 2px solid #b494f4;
  background-color: rgb(175, 150, 226);
  margin: auto;
  padding: 20px;
  width: 80vw;
  height: 25vh; 
}
.loader{
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #96958f;
  transition: opacity 0..75s, visibility 0.75s;
}

.loader-hidden{
  opacity: 0;
  visibility: hidden;
}

.loader-after{
  content: "";
  width: 75px;
  height: 75px;
  border: 15px solid #0d0d0d;
  border-top-color: #db62f4;
  border-radius: 50%;
  animation: loading 0.75s ease infinite;
}

@keyframes loading {
  from{
    transform: rotate(0turn);
  }
  to{
    transform: rotate(1turn);
  }
}