* {
	margin: 0;
	padding: 0;
}

#overlay {
    position: fixed;
    display: none;
    width: 50%;
    height: 100%;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0,0,0,0.5);
}

@media screen and (min-width: 400px) {
    #overlay {
        width: 200px;
    }
}

.overlay-save {
    margin: 5%;
    color: white;
    font-family: sans-serif;
}

h2 {
    margin-top: 5%;
}

hr {
    margin-bottom: 5%;
}

h4 {
    margin-top: 5%;
    margin-bottom: 5%;
}

button {
    display: block;
    margin-top: 1%;
    margin-bottom: 1%;
    width: 75%;
    text-align: center;
}

button:hover {
    cursor: pointer;
}

#custom-width {
    width: 5em;
}

#custom-height {
    width: 5em;
}