.header *  {
    box-sizing: border-box;
}


p {
    margin: 1em 0;
}

nav:not(.mm-menu) {
    display: none;
}

.header {
    position: sticky;
    height: 50px;
    top: 0;
    font-weight: bold;
    line-height: 44px;
    text-align: center;
    z-index: 999;
    background-color: #fff;
}

.header .hmenu {
    display: block;
    position: absolute;
    top: 0;
    width: 50px;
    height: 50px;
    padding-top: 15px;
}

    .header .hopts {
        display: block;
        position: absolute;
        top: 0;
        width: 80px;
        height: 50px;
    }

    .header .hmenu:before,
    .header .hmenu:after {
        content: "";
        display: block;
        background: #333333;
        height: 2px;
    }

    .header .hmenu span {
        background: #333333;
        display: block;
        height: 2px;
        margin: 7px 0;
    }

#content {
    display: block;
    overflow: auto;
    padding: 0 25px 25px 25px;
    text-align: center;
}