.intro-copy {
    padding: 1em;
    margin: 50vh auto;
    max-width: 15em;
    font-family: Helvetica;
    font-weight: lighter;
    font-size: 2em;
    line-height: 1.2;
    text-align: center;
}

.top-link {
    transition: all .25s ease-in-out;
    position: fixed;
    bottom: 0;
    left: 0;
    display: inline-flex;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    margin: 1em;
    border-radius: 50%;
    padding: .25em;
    width: 50px;
    height: 50px;
    background-color: #F8F8F8;
}
.top-link.show {
    visibility: visible;
    opacity: 1;
}
.top-link.hide {
    visibility: hidden;
    opacity: 0;
}
.top-link svg {
    fill: #002752;
    width: 16px;
    height: 8px;
}
.top-link:hover {
    background-color: #E8E8E8;
}
.top-link:hover svg {
    fill: #000000;
}

.screen-reader-text {
    position: absolute;
    clip-path: inset(50%);
    margin: -1px;
    border: 0;
    padding: 0;
    width: 1px;
    height: 1px;
    overflow: hidden;
    word-wrap: normal !important;
    clip: rect(1px, 1px, 1px, 1px);
}
.screen-reader-text:focus {
    display: block;
    top: 5px;
    left: 5px;
    z-index: 100000;
    clip-path: none;
    background-color: #eee;
    padding: 15px 23px 14px;
    width: auto;
    height: auto;
    text-decoration: none;
    line-height: normal;
    color: #444;
    font-size: 1em;
    clip: auto !important;
}