body {
    background:url(https://files.catbox.moe/tnwwtd.jpg);
    background-size:100%;
}

* {
  line-height: 1.5;
}

.gallerypagegrid {
    display: grid;
    grid-template-areas: 'pageleft pageright pageright';
    width:1300px;
}

.artsidebar {
    grid-area: pageleft;
    width:260px;
    padding:20px;
    background:#000;
    background-size:cover;
    color:#ffe3ef;
    text-shadow:0px 0px 10px #ba005d,0px 0px 10px #ba005d;
    border-width: 10px;
    border-style: solid;
    border-image: url("storage/imageborder/laceimgborder.png") 6 fill round;
    background-clip: padding-box;
}
.galleryright {
    grid-area: pageright;
    margin-left:5px;
    width:auto;
    background-size:50%;
    border-width: 10px;
    border-style: solid;
    border-image: url("storage/imageborder/laceimgborder.png") 6 fill round;
    background-clip: padding-box;
}

.pagebody {
    display: flex;
    justify-content: center;
}