body {
    background-color: black !important;
	margin: 0;
	padding: 0;
	background-size: cover;
	height: 100vh;
}
        
img{
    width: 90%;
}

form input:first-child {
    margin-top: 0;
}
    
input {
    margin: 50px 0;
    width: 300px;
    display: block;
    border: none;
    padding: 10px 0;
    border-bottom: solid 1px white;
    -webkit-transition: all 0.3s cubic-bezier(0.64, 0.09, 0.08, 1);
    transition: all 0.3s cubic-bezier(0.64, 0.09, 0.08, 1);
    background: -webkit-linear-gradient(top, rgba(255, 255, 255, 0) 96%, white 4%);
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0) 96%, white 4%);
    background-position: -300px 0;
    background-size: 300px 100%;
    background-repeat: no-repeat;
    color: white;
}
        
input:focus, input:valid {
    box-shadow: none;
    outline: none;
    background-position: 0 0;
}
        
input::-webkit-input-placeholder {
    font-family: 'roboto', sans-serif;
    -webkit-transition: all 0.3s ease-in-out;
    transition: all 0.3s ease-in-out;
}
        
input:focus::-webkit-input-placeholder, input:valid::-webkit-input-placeholder {
    color: white;
    font-size: 10px;
    -webkit-transform: translateY(-20px);
    transform: translateY(-20px);
    visibility: visible !important;
}