index.css

* {
    box-sizing: border-box;
}

body {
    font-family: 'Nunito', sans-serif;
    background-color: #001f3f;
    color: white;
}

h1,
h2 {
    font-family: 'Staatliches', cursive;
}

h1 {
    font-size: 3.5em;
}

h2 {
    font-size: 3em;
}

a {
    color: #FFDC00;
}

button,
input[type="text"] {
    padding: 5px;
}

button:hover {
    cursor: pointer;
}

ul {
    list-style: none;
    padding: 0 0;
    margin: 0 0;
}

.error-message {
    padding: 0 0;
    margin: 0 0;
}

li {
    padding: 10px;
}

li,
img {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.container,
header,
form,
#results,
.error-message {
    margin: 0 auto;
    max-width: 90%;
    margin-left: auto;
    margin-right: auto;
}

.error-message {
    color: red;
}

.hidden {
    display: none;
}

#mapid {
    height: 500px;
    margin-bottom: 2em;
    max-width: 90%;
    margin-right: auto;
    margin-left: auto;
}