* {
  box-sizing: border-box;
}

html, body {
    margin: 0px;
    height: 100%;
}

.modal.background {
    background-image: url('/tip.jpg');
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    height: 100%;
    width: 100%;
    position: absolute;
}

.modal.content {
    width: 95%;
}

.modal.box {
    background-color: #A9D0F5;
    border-radius: 15px;
    text-align: center;
    margin: 6em auto;
    width: 50%;
    -webkit-animation-name: from_top;
    -webkit-animation-duration: 1.5s;
    animation-name: from_top;
    animation-duration: 1.5s;
}

#video {
    background-image: url('/willpower.gif');
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    height: 100%;
    width: 100%;
    z-index: 255;
    position: absolute;
    display: none;
}

@-webkit-keyframes from_top {
    from {
        margin: -6em auto;
        opacity: 0;
    }

    to {
        margin: 6em auto;
        opacity: 1;
    }
}

@keyframes from_top {
    from {
        margin: -6em auto;
        opacity: 0;
    }

    to {
        margin: 6em auto;
        opacity: 1;
    }
}