mediaquery style.css

/* =Media Print
    If you're working on a Child Theme, make sure that all
    media queries are included in your style.css
-------------------------------------------------------------- */
@media print {

    h1 {
        page-break-before: always;
    }

    h1,  h2,  h3,  h4,  h5,  h6 {
        page-break-after: avoid;
    }

    ul,  ol,  dl {
        page-break-before: avoid;
    }
}

/*  Retina (HiDPI) Display
    http://www.quirksmode.org/blog/archives/2012/06/devicepixelrati.html
-------------------------------------------------------------- */
@media
    only screen and (-moz-min-device-pixel-ratio:1.5),
    only screen and (-o-min-device-pixel-ratio:3/2),
    only screen and (-webkit-min-device-pixel-ratio:1.5),
    only screen and (min-device-pixel-ratio:1.5) {

    body {}
}

/* =Responsive (Mobile) Design
-------------------------------------------------------------- */
@media screen and (max-width: 980px) {

    body {}

    .grid,
    .grid-right {
        float: none;
    }

    #featured-image .fluid-width-video-wrapper {
        margin: 20px 0 0 0;
    }

    .home #widgets {
        margin-top: 40px;
    }

    .top-widget,
    .home .top-widget {
        margin-top: 0 !important;
    }

    .hide-980 {
        display: none;
    }

    .show-980 {
        display: block;
    }

}

@media screen and (max-width: 650px) {

    body {}

    #logo {
        float: none;
        margin: 0;
        text-align: center;
    }

    .grid,
    .grid-right {
        float: none;
    }

    #featured-image .fluid-width-video-wrapper {
        margin: 20px 0 0 0;
    }

    .top-widget {
        float: none;
        margin: 0 auto 10px auto;
        position: relative;
        text-align: center;
        width: auto;
    }

    .top-widget .widget-title {
        text-align: center;
    }

    .js .menu,
    .js .sub-header-menu {
        display: none;
    }

    .top-menu,
    .footer-menu li {
        float: none;
        font-size: 11px;
        text-align: center;
    }

    .tinynav {
        display: block;
    }

    .sb-holder {
        display: block;
    }

    #author-meta {
        padding: 20px;
    }

    .hide-650 {
        display: none;
    }

    .show-650 {
        display: block;
    }

    #footer {
        text-align: center;
    }

    #footer .social-icons {
        padding-bottom: 10px;
        text-align: center;
    }
}

@media screen and (max-width: 480px) {

    body {}

    #logo {
        float: none;
        text-align: center;
    }

    .grid,
    .grid-right {
        float: none;
    }

    #featured-image .fluid-width-video-wrapper {
        margin: 20px 0 0 0;
    }

    .featured-title {
        font-size: 40px;
        padding: 40px 20px 0 20px
    }

    .featured-subtitle {
        font-size: 24px;
    }

    .navigation .next,
    .navigation .previous {
        display: block;
        margin: 0 auto;
        text-align: center;
    }

    .menu ul,
    .menu li,
    .top-menu,
    .footer-menu li,
    .sub-header-menu li {
        float: none;
        text-align: center;
        text-rendering: optimizeSpeed;
    }

    .hide-480 {
        display: none;
    }

    .show-480 {
        display: block;
    }

    #footer {
        text-align: center;
    }

    #footer .social-icons {
        text-align: center;
    }
}

@media screen and (max-width: 320px) {

    body {}

    #featured p {
        font-size: 12px;
        line-height: 1.5em;
    }

    .featured-title {
        font-size: 35px;
    }

    .featured-subtitle {
        font-size: 15px;
    }

    .call-to-action a.button {
        font-size: 14px;
        padding: 7px 17px;
    }

    .hide-320 {
        display: none;
    }

    .show-320 {
        display: block;
    }
}

@media screen and (max-width: 240px) {

    body {}

    #featured p {
        font-size: 11px;
        line-height: 1.5em;
    }

    .featured-title {
        font-size: 20px;
    }

    .featured-subtitle {
        font-size: 11px;
    }

    .call-to-action a.button {
        font-size: 12px;
        padding: 5px 15px;
    }

    .top-widget area,
    .top-widget select,
    .top-widget textarea,
    .top-widget input[type="text"],
    .top-widget input[type="password"] {
        width: 75%;
    }

    .widget-title,
    .widget-title-home h3 {
        font-size: 14px;
        height: 13px;
        line-height: 13px;
        text-align: left;
    }

    .hide-240 {
        display: none;
    }

    .show-240 {
        display: block;
    }
}

/*The last 29 days of the month are the hardest."- Nikola Tesla*