#hackbox {
    position: fixed;
    z-index: 50;
    width:100vw;
}

input[type=checkbox]#hackbutton {
    position: absolute;
    top:-999px;
    left: -999px;
}

input[type=checkbox]#hackbutton:checked ~ label {
    position: fixed;
    top: 655px;
    left: calc(50vw + 90px);
    display: block;
    padding: 0 15px;
    background-color: rgba(255,255,255, 0.1);
}

#hackbox > label {
    display: none;
}

#messagebox {
    box-sizing: border-box;
    background: black;
    border: 1px dotted black;
    display: none;
    width: 638px;
    height: 638px;
    padding: 70px 119px 15px 119px;
    margin: 80px auto 0 auto;
    background-image: url("Plan_e_bg.jpg");
    -webkit-background-size:;
    background-size: 638px auto;
    background-position: 0 29%;
}

#messagebox h1 {
    font-size: 26px;
}

#messagebox p {
    font-size: 14px;
}

#messagebox p, #messagebox h1 ,#messagebox span {
    text-align: center;
    color: #bcbcbc;
    line-height: 150%;
}

#msgbox-img {
    /*width:100%;*/
    /*height: 50px;*/
    /*background-image: url("logo-plan-e_transparent.png");*/
    /*background-size: contain;*/
}

input[type=checkbox]#hackbutton:checked ~ #messagebox {
    display: block;
}

#firstblock {

    margin-top: 30px;
}

#secondblock {
    margin-top: 190px;
}