* {
    box-sizing: border-box;
}

body {
    position: absolute;
    width: 100%;
    height: 100%;
    padding: 20px;
    margin: 0px;
    overflow: hidden;
}

.bg {
    position: absolute;
    left: 0px;
    top: 0px;
    width: 100%;
    height: 100%;
    
    background-image: url('../img/hg.jpg');
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
    z-index: -1;
}

.bg::after {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: rgba(255,255,255,0.4);
}

.container_1 {
    width: 100%;
    height: 100%;

    display: grid;
    grid-template-rows: auto;
    grid-template-columns: 250px auto;
    gap: 10px;
    background-color: rgba(255,0,0,0.2);
}

.left,
.right {
    background-color: rgba(255,0,0,0.2);
}

.left {
    display: grid;
    grid-template-rows: auto 1fr;
}

.logo {
    height: 200px;
    background-color: rgba(0,0,128,0.4);
    background-image: url('../img/msg-stop_neu.svg');
    background-repeat: no-repeat;
    background-size: 60%;
    background-position: center;
}

nav {
    display: flex;
    flex-wrap: wrap;
    align-content: flex-start;
    justify-content: center;
    column-gap: 3px;
    background-color: rgba(0,128,0,0.4);
}

nav a {
    display: inline-block;
    width: 150px;
    height: 30px;
    line-height: 30px;
    counter-reset: black;
    background-color: blueviolet;
    text-decoration: none;
    text-align: center;
    border: 1px solid black;
}

.right {
    display: grid;
    grid-template-rows: auto 1fr;
}

header {
    background-color: rgba(90,255,20,0.3);
}

main {
    background-color: rgba(255, 200, 20, 0.384);
}

iframe {
    width: 100%;
    height: 100%;
}


@media screen and (max-width: 600px) {
    .container_1 {
        grid-template-columns: auto;
        grid-template-rows: auto 1fr;
    }

    .logo {
        width: 80px;
        height: auto;
        order: 1;
    }

    .left {
        grid-template-columns: 1fr auto;
        background-color: rgba(16, 150, 4, 0.411);
    }

    nav a {
        width: 110px;
        height: 20px;
        line-height: 20px;
        font-size: 0.9rem;
    }

}