style.css

* {
	padding: 0;
	margin: 0;
	box-sizing: border-box;
}
body {
	background-image: linear-gradient(to right, #4facfe 0%, #00f2fe 100%);
	height: 100vh;
	display: flex;
	justify-content: center;
	align-items: center;
}
form {
	background: #fff;
	padding: 1rem;
	border-radius: 5px;
	font-family: san-serif;
}
form h1, div > label, input[type='button'] {
	text-transform: capitalize;
}
label {
	display: block;
	opacity: 0.5;
}
input,select, h3 {
	border: none;
	border-bottom: 1px solid rgba(0,0,0,0.5);
	outline: none;
	padding: 0.3rem;
	font-size: 1.2rem;	
}
input[type='button'] {
	width: 100%;
	padding: 1rem;
	background: #2b82ff;
	color: #fff;
	font-size: larger;
	font-weight: bolder;
	border-radius: 5px;
}
select {
	width: 100%;
	background: transparent;
	margin: 10px 0;
}
section, form > div{
	margin: 1rem 0;
}


form > section {
		display: grid;
		grid-template-columns: 1fr;
		grid-gap: 2rem;
		align-items: center;
		justify-content: center;
	}
	
@media screen and (min-width: 600px) {
 form > section {
		display: grid;
		grid-template-columns: repeat(2,1fr);
		grid-gap: 2rem;
		align-items: center;
		justify-content: center;
	}
}