:root {
    --main-bg-color: lightgray;
    --content-bg-color: white;
    --font-color: black;
    --content-break-md: 1024px;
}

body {
    background-color: var(--main-bg-color);
    margin: 40px;
}

img {
    width: 100%;
    max-width: 200px;
    vertical-align: top;
}

ul {
    margin: 0px;
    padding: 0px;
    display: inline-flex;
    list-style: none;
}

li {
    border-radius: 5px;
    margin:10px;
    padding: 10px;
    background-color: #eee;
    /*box-shadow: 4px 4px 2px 2px #ddd;*/
}

a {
    color: var(--font-color);
    text-decoration: none;
}

li:hover {
    background-color: lightgray;
}

.wrapper {
    display: grid;
    grid-gap: 10px;
    grid-template-columns: 10% 70% 20%;
    background-color: var(--main-bg-color);
    color: var(--font-color);
}

.box {
    background-color: var(--content-bg-color);
    border-radius: 5px;
    padding: 20px;
    font-size: 120%;
}

@media only screen and (min-width: 1025px) {
    .topmenu {
        grid-column: 1 / 4;
        grid-row: 1;
    }

    .sidebar {
        grid-column: 3;
        grid-row: 2 / 3;
    }

    .content {
        grid-column: 1/3;
        grid-row: 2;
    }
}

@media only screen and (max-width: 1024px) {
    .topmenu {
        grid-column: 1 / 4;
        grid-row: 1;
    }

    .sidebar {
        grid-column: 1/4;
        grid-row: 3;
    }

    .content {
        grid-column: 1/4;
        grid-row: 2;
    }
}