#environment-banner span {
    background: #ff3737;
    color: #fff;
    text-decoration: none;
    font-family: arial, sans-serif;
    text-align: center;
    padding: 5px 40px;
    font-size: 2rem;
    line-height: 2rem;
    transition: 0.5s;
    width: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

@media screen and (min-width: 840px) {
    #environment-banner {
        position: absolute;
        display: block;
        top: 0;
        right: 0;
        width: 200px;
        overflow: hidden;
        height: 200px;
        z-index: 9999;
    }

    #environment-banner span {
        width: 200px;
        position: absolute;
        top: 40px;
        right: -40px;
        left: auto;
        transform: rotate(45deg);
        -webkit-transform: rotate(45deg);
        -ms-transform: rotate(45deg);
        -moz-transform: rotate(45deg);
        -o-transform: rotate(45deg);
        box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.8);
    }

    #environment-banner span::before, #environment-banner span::after {
        content: "";
        width: 100%;
        display: block;
        position: absolute;
        top: 1px;
        left: 0;
        height: 1px;
        background: #fff;
    }

    #environment-banner span::after {
        bottom: 1px;
        top: auto;
    }
}