style.css

@import url("https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #5a4ca1;
  font-family: "poppins", sans-serif;
}

.container {
  width: 360px;
  height: 235px;
  padding: 20px 20px 30px 20px;
  background: #fff;
  border-radius: 5px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: all 0.2s;
}

.container .app-name {
  width: 100%;
  height: 60px;
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  align-items: center;
  padding: 25px;
  font-size: 11px;
  border-radius: 1px solid grey;
}

.container .app-name i {
  padding-right: 7px;
}

.container .url-box {
  margin-top: 60px;
}

.container .url-box p {
  font-size: 12px;
  color: grey;
}

.container .url-box input {
  all: unset;
  width: 92%;
  height: 20px;
  padding: 10px;
  background: #f5f5f5;
  font-size: 14px;
  margin-top: 8px;
  border-radius: 3px;
}

.container .generate-btn {
  all: unset;
  width: 100%;
  height: 50px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #5a4ca1;
  border-radius: 3px;
  margin-top: 12px;
  cursor: pointer;
  font-size: 14px;
}

.container .qr-box {
  height: 200px;
  width: 100%;
  border: 1px solid grey;
  border-radius: 3px;
  margin-top: 25px;
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  visibility: hidden;
  overflow: hidden;
}

::selection {
  background: rgb(100, 149, 237, 0.8);
  color: #fff;
}