style.css

@import url('https://fonts.googleapis.com/css?family=Muli:300&display=swap');

* {
	box-sizing: border-box;
}

body {
	background-color: #222222;
	color: #F3EFE0;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	min-height: 100vh;
	font-family: 'Muli', sans-serif;
	margin: 0;
	padding: 10px;
	text-align: center;
}

.textarea {
	border: none;
	display: block;
	font-family: inherit;
	font-size: 16px;
	padding: 10px;
	text-align: center;
	height: 40px;
	width: 90%;
	margin: 15px auto 15px auto;
	border-radius: 26.5px;
}

.scan form{
	margin: 15px auto 0 auto;
	width: 90%;
	height: 210px;
	display: flex;
	cursor: pointer;
	user-select: none;
	text-align: center;
	border-radius: 26.5px;
	padding: 20px;
	background: #fff;
	color: #434242;
	align-items: center;
	justify-content: center;
	transition: height 0.2s ease;
}

form img{
	display: none;
	max-width: 148px;
	margin: auto;
}

.fa-cloud-upload {
	font-size: 55px;
}

p {
	margin: 5px auto 10px auto;
}

.result textarea{
	margin: 15px auto 15px auto;
	width: 90%;
	height: 128px;
	outline: none;
	resize: none;
	color: #fff;
	font-size: 18px;
	background: none;
	border-radius: 10px;
	padding: 10px 15px;
	border: 1px solid #fff;
}

textarea::-webkit-scrollbar{
	width: 0px;
}

textarea:hover::-webkit-scrollbar{
	width: 5px;
}

textarea:hover::-webkit-scrollbar-track{
	background: none;
}

textarea:hover::-webkit-scrollbar-thumb{
	background: #fff;
	border-radius: 8px;
}

h1 {
	color: #F3EFE0;
	margin: 0 0 20px;
}

.container {
	border-radius: 26.5px;
	padding: 20px;
	width: 350px;
	max-width: 100%;
}

.generated-qrcode {
	margin: 15px auto 15px auto;
	width: 90%;
	border-radius: 26.5px;
	background:#fff ;
}

.generated-qrcode .qrcode {
	margin: 35px auto 30px auto;
}

.main-btn {
    border-radius: 26.5px;
	background-color: #F3EFE0;
	border: 0;
	box-shadow: 0 16px 22px -17px #000000;
	color: #222222;
	cursor: pointer;
	font-size: 16px;
	line-height: 20px;
	padding: 10px 20px;
	margin: 0 2px 0 2px;
}

.main-btn:hover {
	background-color: #434242;
	color: #F3EFE0;
}

.floating-btn {
	border-radius: 26.5px;
	background-color: #F3EFE0;
	border: 0;
	box-shadow: 0 16px 22px -17px #000000;
	color: #434242;
	cursor: pointer;
	font-size: 16px;
	line-height: 20px;
	padding: 12px 20px;
	position: fixed;
	bottom: 20px;
	right: 20px;
	z-index: 999;
}

.floating-btn:hover {
	background-color: #434242;
	color: #F3EFE0;
}

@media screen and (max-width: 480px) {
	.floating-btn {
		right: 10px;
	}
}