Fake Broken Page CSS

Attempt at fake broken page using CSS tricks.

by MegaScience

HTML

<div id="container"><h1>Here is my test page!</h1>

Sadly, it might crash...</div>

CSS

/* Normal styling */
body {
    background-color: yellow;
    text-align:center;
}

h1 {
    margin-top: 0;
}

#container {
    padding: 10px;
    text-align: center;
    margin: auto 0;
    max-width: 900px;
    min-width: 740px;
    margin:0px auto;
    border: 4px solid white;
    background-color: black;
    color: black;
    text-shadow: -1px -1px 0 white, 1px -1px 0 white, -1px 1px 0 white, 1px 1px 0 white;
    font-size: 70px;
    font-family: Arial;
    font-weight: bolder;
    text-align: left;
    width: 500px;
}

/* Fake page crash */
body > :first-child:after {
    background-color: rgba(255, 255, 255, 0.8);
    content: " ";
    left: 0;
    top: 0;
    position: absolute;
    width: 100%;
    height: 100vh;
    cursor: wait;
    visibility: hidden;
    -moz-animation: popin 1s ease 3.5s forwards;
    -webkit-animation: popin 1s ease 3.5s forwards;
    -o-animation: popin 1s ease 3.5s forwards;
    -ms-animation: popin 1s ease 3.5s forwards;
    animation: popin 1s ease 3.5s forwards;
}

body {
    overflow: hidden;
}

@-moz-keyframes popin {
    from {
        visibility: hidden;/*
		overflow: visible;*/
    }
    to {
        visibility: visible;/*
		overflow: hidden;*/
    }
}
@-webkit-keyframes popin {
    from {
        visibility: hidden;/*
		overflow: visible;*/
    }
    to {
        visibility: visible;/*
		overflow: hidden;*/
    }
}
@-o-keyframes popin {
    from {
        visibility: hidden;/*
		overflow: visible;*/
    }
    to {
        visibility: visible;/*
		overflow: hidden;*/
    }
}
@-ms-keyframes popin {
    from {
        visibility: hidden;/*
		overflow: visible;*/
    }
    to {
        visibility: visible;/*
		overflow: hidden;*/
    }
}
@keyframes popin {
    from {
        visibility: hidden;/*
		overflow: visible;*/
    }
    to {
        visibility: visible;/*
		overflow: hidden;*/
    }
}