*{
margin:0;
padding:0;
font-family: sans-serif;
box-sizing: border-box;
}

body{
background: #DEDEDE;
display: flex;
min-height:100vh;
}

form{
margin: auto;
width: 50%;
max-width: 500px;
background: #F3F3F3;
padding: 30px;
border: 1px solid rgba(0,0,0,0.2);
}

h2{
text-align: center;
margin-bottom: 20px;
color: rgba(0,0,0,0.5);
}

input{
display: block;
padding: 10px;
width: 100%;
margin: 30px 0;
font-size: 20px;
}

input[type="submit"] {
background: linear-gradient(#FFDA63, #FFB948);
border:0;
color: brown;
opacity: 0.8;
cursor: pointer;
border-radius: 10px;
margin-bottom: 0;
}

input[type="submit"]:hover {
opacity: 1;
}

input[type="submit"]:active {
transform: scale(0.95);
}

@media (max-width:768px){
form{
width:75%
}
}

@media (max-width:480px){
form{
width:95%
}
}