style.css

html, body {
    margin: 0;
    font-family: Arial, sans-serif;
    width: 100vw;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    overflow: auto;
}

.toolbar {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    margin-bottom: 1em;
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

.toolbar-item {
    padding: 1em;
    border-radius: 1px;
    cursor: pointer;
    transition: background-color 500ms;
}

.toolbar-item:hover {
    background-color: #dee2e6;
}

.text-box {
    text-align: justify;
    padding: 1em;
}

.waystone {
    width: 100%;
    height: 100%;
    background-image: url("./img/waystone.png");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

@media (max-width: 400px) {
    .waystone {
        height: 50px;
    }
}

.box {
    width: 100%;
    min-width: 10em;
    height: 70vh;
    margin-bottom: 1em;
    background: lightblue;
    display: inline-block;
}

.viewme {
    transition: all 500ms ease;
}

.viewme[data-view='inview-top'],
.viewme[data-view='inview-bottom'] {
    opacity: 1;
    transform: translateY(0);
}

.viewme[data-view='outview-top'] {
    opacity: 0;
    transform: translateY(-1em);
}

.viewme[data-view='outview-bottom'] {
    opacity: 0;
    transform: translateY(1em);
}