html, body {
    /* Color */
    background: #FFFFFF;

    /* Size */
    width:  100%;
    height: 100%;

    /* Space */
    padding: 0;
    margin:  0;

    /* Layout */
    flex:       1 1 auto;
    box-sizing: border-box;

    /* Layout */
    display:         flex;
    flex-flow:       column nowrap;
    align-items:     center;
    justify-content: stretch;
}

main {
    /* Space */
    padding: 0;
    margin:  0;
    gap:     4em;

    /* Layout */
    flex:       1 1 auto;
    box-sizing: border-box;

    /* Layout */
    display:         flex;
    flex-flow:       column nowrap;
    align-items:     center;
    justify-content: center;
}

x-themes, x-sizes {
    /* Space */
    padding: 0;
    margin:  0;
    gap:     0.2em;

    /* Layout */
    flex:       0 1 auto;
    box-sizing: border-box;

    /* Layout */
    display:         flex;
    flex-flow:       row wrap;
    align-items:     center;
    justify-content: center;
}

img {
    /* Size */
    width:  6em;
    height: 6em;

    /* Space */
    padding: 0;
    margin:  0;

    /* Border */
    border-width:  0;
    border-radius: 8px;

    /* Cursor */
    cursor: pointer;

    /* Layout */
    flex:       0 1 auto;
    box-sizing: border-box;
}

a {
    /* Color */
    color:      #FFFFFF;
    background: #202020;

    /* Font */
    font-family: roboto;
    font-weight: bold;
    font-style:  normal;
    font-size:   2em;

    /* Font */
    text-decoration: none;

    /* Size */
    width:  3em;
    height: 3em;

    /* Space */
    padding: 0;
    margin:  0;

    /* Border */
    border-width:  0;
    border-radius: 8px;

    /* Layout */
    flex:       1 1 auto;
    box-sizing: border-box;

    /* Layout */
    display:         flex;
    flex-flow:       row wrap;
    align-items:     center;
    justify-content: center;
}

.strawberry a {
    /* Color */
    background: #F85C70;
}

.peach a {
    /* Color */
    background: #FBC490;
}

.lemon a {
    /* Color */
    background: #FFD53D;
}

.sky a {
    /* Color */
    background: #98E8E0;
}

.spirit a {
    /* Color */
    background: #A16AE8;
}