index.css

*{
	box-sizing: border-box;
}
html{
	height: 100%;
}
body{
	height: 100%;
	background-color: #2D2D2D;
	overflow: hidden;
}
main{
	position: relative;
	z-index: 2;
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	height: 100%;
	min-height: 100%;
	margin-bottom: 200px;
	overflow: hidden;
}

.logo{
	position: relative;
	display: block;
	width: 120px;
	height: 120px;
	margin: -120px 0px 0px 0px;
	opacity: 0.2;
}
h1{
	margin-bottom: 8px;
	color: white;
	font-family: "Segoe UI", sans-serif;
	font-size: 42px;
	font-weight: 100;
	opacity: 0.8;
}
h3{
	margin-top: 0px;
	margin-bottom: 30px;
	color: white;
	font-family: "Segoe UI", sans-serif;
	font-size: 16px;
	font-weight: 100;
	text-align: center;
	opacity: 0.8;
}
p{
	margin-top: 0px;
	color: white;
	font-family: "Segoe UI", sans-serif;
	font-size: 14px;
	font-weight: 100;
	text-align: center;
	opacity: 0.8;
}
label{
	margin-top: 0px;
	color: white;
	font-family: "Segoe UI", sans-serif;
	font-size: 14px;
	font-weight: 100;
	text-align: center;
	opacity: 0.8;
}

form{
	display: flex;
	flex-flow: column nowrap;
}

input{
	width: 300px;
	max-width: 300px;
	margin: 0px 0px 10px 0px;
	padding: 5px;
	border: 1px solid #4D4D4D;
	border-radius: 5px;
	transition: 0.2s ease all;
}
input[type=text]{
	color: white;
	text-shadow: 1px 1px 1px black;
	background: none;
	box-shadow: 0px 0px 3px black inset;
}
input[type=text]::placeholder{
	color: lightgrey;
	text-shadow: none;
}
input[type=text]:focus{
	border-color: white;
	outline: none;
}
input[type=submit]{
	color: white;
	border: 1px solid grey;
	background: none;
	cursor: pointer;
}
input[type=submit]:hover{
	color: white;
	border: 1px solid white;
	background: #4D4D4D;
}

#github_link{
	position: absolute;
	z-index: 1;
	bottom: 26px;
	display: block;
	width: 26px;
	height: 26px;
	opacity: 0.7;
	filter: invert(1);
	transition: 0.1s ease all;
}
#github_link:hover{
  	opacity: 1;
}