html {
    height: 100%;
}
body {
    font-family: 'Noto Sans TC', sans-serif;
    height: 100%;
    width: 100%;
    overflow: hidden;
    background-color: #333;
}

h1,h2,h3,h4,h5,h6 {
    font-family: 'Noto Serif TC', serif;
}

p {
    text-align: justify;
    text-justify: inter-word;
    word-break: break-all;
}

red, .red {
    color: red;
}

#bg-canvas {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
}

#bg-canvas.drawing {
    z-index: 1;
    background-color: #FFF3;
}

#loading {
    z-index: 99999;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

#loading img {
    position: absolute;
    left: 45%;
    top: 45%;
    width: 10%;
    height: 10%;
}

#header {
    color: white;
    height: 3em;
    line-height: 3em;
    padding-left: 3em;
    background-image: url("./banner.jpg");
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
}

#collage-source {
    z-index: 999;
    height: calc(100% - 4em);
    width: 30vw;
    position: fixed;
    left: -30vw;
    background-color: #666;
    transition: .3s;
    border: 0.5em solid #222;
}

#collage-source.show {
    left: 0;
}

#source-box {
    height: 100%;
    width: 100%;
    overflow-y: scroll;
    overflow-x: hidden;
}

#source-box .sticky-top {
    background-color: #666;
    padding: 1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid #AAA;
}

#source-box h4 {
    color: white;
    font-weight: bold;
    border-bottom: 1px solid;    
    padding-bottom: 1rem;
    margin-top: 2rem;
}

#source-box .source-img {
    background-color: white;
    padding-top: 100%;
    filter: opacity(0.8);
    transition: .3s;
}

#source-box .source-img img {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: contain;
    left: 0;
    top: 0;
}

#source-box .source-img:hover {
    filter: opacity(1);
}

.nav-pills .nav-link.active, .nav-pills .show>.nav-link {
    background-color: #6c757d;
}

#collage-tools {
    position: absolute;
    width: 18em;
    bottom: 0.5em;
    left: 31vw;
}

button[title="download"] {
    position: fixed;
    right: 1em;
    bottom: 1em;
}

#bgcolor {
    display: inline-block;
    height: 2.5em;
    vertical-align: middle;
    margin-left: 1em;
}

#collage-box {
    position: relative;
    display: flex;
    overflow: hidden;
    margin: auto;
}

#collage-area {
    display: flex;
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    align-items: center;
    justify-content: center;
}

#collage-background {
    background-color: #FFF;
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

#image-background {
    background-size: cover;
    background-position: center center;
    background-image: url("source/bg/b2.jpg");
    opacity: 1;
    width: 100%;
    height: 100%;
}

.target {
    position: absolute;
    width: 200px;
}

.target img {
    pointer-events: none;
    user-select: none;
    height: 100%;
    width: 100%;
}

.moveable-buttons {
    padding-bottom: 0.5em;
}

.target-control {
    width: 2.5em;
    height: 2.5em;
}

#bgModal .bg-img {
    background-color: white;
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
    padding-top: 100%;
    filter: opacity(0.8);
    transition: .3s;
}

.vertical-alignment-helper {
    display: table;
    height: 100%;
    width: 100%;
    pointer-events: none;
    /* This makes sure that we can still click outside of the modal to close it */
}

.vertical-align-center {
    /* To center vertically */
    display: table-cell;
    vertical-align: middle;
    pointer-events: none;
}

.modal-content {
    /* Bootstrap sets the size of the modal in the modal-dialog class, we need to inherit it */
    width: inherit;
    max-width: inherit;
    /* For Bootstrap 4 - to avoid the modal window stretching full width */
    height: inherit;
    /* To center horizontally */
    margin: 0 auto;
    pointer-events: all;
}

@media (max-width: 767px) {
    #collage-source {
        width: 50vw;
        left: -50vw;
    }
    #collage-tools {
        left: 51vw;
    }
}