body {
    margin: 0;
}

.parent {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    overflow: hidden;
    font-family: Arial,Helvetica,sans-serif;
}

@media only screen and (min-device-width : 1px) and (max-device-width : 1023px) and (orientation : landscape) {

    .open {
        max-width: 100%;
        display: block;
        margin: 0 auto;
        width: 200px;
        height: 100px;
    }
    .open a {
        background: none;
        width: 200px;
        height: 100px;
        text-align: center;
        vertical-align: middle;
        display: block;
        font-size: 40px;
        font-weight: normal;
        text-decoration: none;
        line-height:100px;
        color: #00A6DA;
        -webkit-box-shadow: 0px 2px 5px 1px rgba(0,0,0,0.15);
        -moz-box-shadow: 0px 2px 5px 1px rgba(0,0,0,0.15);
        box-shadow: 0px 2px 5px 1px rgba(0,0,0,0.15);
        border-radius: 3%;
    }

    .block {
        width: 550px;
        height: 550px;
        position: absolute;
        top: 50%;
        left: 50%;
        margin: -275px 0 0 -275px;
    }

    img {
        max-width: 100%;
        height:47px;
        width: 200px;
        display: block;
        border: none;
        margin: 70px auto 20px auto;
    }

    .short-description {
        max-width: 100%;
        height: auto;
        display: block;
        margin: 0 auto;
        border: none;
        font-size: 42px;
        font-weight: normal;
        text-align: center;
    }

    .long-description {
        max-width: 100%;
        height: auto;
        display: block;
        margin: 8% auto;
        border: none;
        font-size: 24px;
        text-align: left;
        color: #9f9f9f;
        line-height: 30px;
    }
}

@media only screen and (min-device-width : 1024px) and (max-device-width : 10000px) and (orientation : landscape) {

    .open {
        max-width: 100%;
        display: block;
        margin: 0 auto;
        width: 300px;
        height: 150px;
    }
    .open a {
        background: none;
        width: 300px;
        height: 170px;
        text-align: center;
        vertical-align: middle;
        display: block;
        font-size: 50px;
        font-weight: normal;
        text-decoration: none;
        line-height:170px;
        color: #00A6DA;
        -webkit-box-shadow: 0px 2px 5px 1px rgba(0,0,0,0.15);
        -moz-box-shadow: 0px 2px 5px 1px rgba(0,0,0,0.15);
        box-shadow: 0px 2px 5px 1px rgba(0,0,0,0.15);
        border-radius: 3%;
    }

    .block {
        width: 840px;
        height: 840px;
        position: absolute;
        top: 50%;
        left: 50%;
        margin: -420px 0 0 -420px;
    }

    img {
        max-width: 100%;
        height: 64px;
        width: 270px;
        display: block;
        border: none;
        margin: 150px auto 30px auto;
    }

    .short-description {
        max-width: 100%;
        height: auto;
        display: block;
        margin: 0 auto;
        border: none;
        font-size: 66px;
        font-weight: normal;
        text-align: center;
    }

    .long-description {
        max-width: 100%;
        height: auto;
        display: block;
        margin: 5% auto;
        border: none;
        font-size: 36px;
        text-align: left;
        color: #9f9f9f;
        line-height: 50px;
    }
}

@media only screen and (min-device-width : 1px) and (max-device-width : 10000px) and (orientation : portrait) {

    .open {
        max-width: 100%;
        display: block;
        margin: 0 auto;
        width: 300px;
        height: 150px;
    }
    .open a {
        background: none;
        width: 300px;
        height: 170px;
        text-align: center;
        vertical-align: middle;
        display: block;
        font-size: 50px;
        font-weight: normal;
        text-decoration: none;
        line-height:170px;
        color: #00A6DA;
        -webkit-box-shadow: 0px 2px 5px 1px rgba(0,0,0,0.15);
        -moz-box-shadow: 0px 2px 5px 1px rgba(0,0,0,0.15);
        box-shadow: 0px 2px 5px 1px rgba(0,0,0,0.15);
        border-radius: 3%;
    }

    .block {
        width: 840px;
        height: 840px;
        position: absolute;
        top: 50%;
        left: 50%;
        margin: -420px 0 0 -420px;
    }

    img {
        max-width: 100%;
        height: 64px;
        width: 270px;
        display: block;
        border: none;
        margin: auto auto 40px auto;
    }

    .short-description {
        max-width: 100%;
        height: auto;
        display: block;
        margin: 0 auto;
        border: none;
        font-size: 66px;
        font-weight: normal;
        text-align: center;
    }

    .long-description {
        max-width: 100%;
        height: auto;
        display: block;
        margin: 15% auto;
        border: none;
        font-size: 36px;
        text-align: left;
        color: #9f9f9f;
        line-height: 50px;
    }
}