jitsi_app_c0/css/modals/virtual-background/_virtual-background.scss

.virtual-background-dialog {
    margin-left:-10px;
    position: relative;
    max-height: 300px;
    color: white;
    display: inline-grid;
    grid-template-columns: auto auto auto auto auto;
    column-gap: 9px;
    cursor: pointer;
    .desktop-share:hover,  .thumbnail:hover, .blur:hover, .slight-blur:hover, .virtual-background-none:hover{
        opacity: .5;
        border: 2px solid #99bbf3;
        @media (min-width: 432px) and (min-width: 432px) and (max-width: 632px) {
            height: 56px;
            width: 56px;
        }
        @media (max-width: 432px){
            height: 56px;
            width: 56px;
        }
    }
    .background-option {
        margin-top: 8px;
        border-radius: 6px;
        height: 60px;
        width: 107px;
        text-align: center;
        justify-content: center;
        font-weight: bold;
        box-sizing: border-box;
        display: flex;
        align-items: center;
    }
    .thumbnail {
        object-fit: cover;
    }

    .thumbnail:hover ~ .delete-image-icon {
        display: block;
    }
    .thumbnail-selected {
        object-fit: cover;
        border: 2px solid #246FE5;
    }
    .blur{
        box-shadow: inset 0 0 12px #000000;
        background: #7E8287;
        padding: 0 10px;
    }
    .blur-selected {
        box-shadow: inset 0 0 12px #000000;
        background: #7E8287;
        border: 2px solid #246FE5;
        padding: 0 10px;
    }
    .slight-blur{
        box-shadow: inset 0 0 12px #000000;
        background: #A4A4A4;
        padding: 0 10px;
    }
    .slight-blur-selected{
        box-shadow: inset 0 0 12px #000000;
        background: #A4A4A4;
        border: 2px solid #246FE5;
        padding: 0 10px;
    }
    .virtual-background-none {
        background: #525252;
        padding: 0 10px;
    }
    .none-selected {
        background: #525252;
        border: 2px solid #246FE5;
        padding: 0 10px;
    }

    .desktop-share{
        background: #525252;
    }
    .desktop-share-selected{
        background: #525252;
        border: 2px solid #246FE5;
        padding: 0 10px;
    }

    @media (min-width: 432px) and (max-width: 632px) {
        font-size: 1.5vw;
    }
    @media (max-width: 432px){
        font-size: 1.5vw;
    }
}

.modal-dialog-form .virtual-background-loading {
    overflow: hidden;
    position: fixed;
    left: 50%;
    margin-top: 10px;
    transform: translateX(-50%);
}
.modal-dialog-form .video-preview {
    height: 250px;
}
.file-upload-btn {
    display: none;
}
.file-upload-label{
    font-size: 14px;
    font-weight: 600;
    line-height: 20px;
    margin-left: -10px;
    margin-top: 16px;
    margin-bottom: 8px;
    color: #669AEC;
    display: inline-flex;
    cursor: pointer;
}

.delete-image-icon {
    background: #3d3d3d;
    position: absolute;
    display: none;
    left: 96;
    bottom: 51;
    @media (min-width: 432px) and (max-width: 632px) {
        left: 51px
    }
}

.delete-image-icon:hover {
    display: block;
}

.thumbnail-container {
    position: relative;
    &:focus-within {
        .thumbnail ~ .delete-image-icon{
           display: block;
       }
    }
}

.add-background{
    margin-right: 8px;
}

.apply-background-btn{
    margin-top: 16px;
    float: right;
 }

 .video-background-preview-entry{
    margin-left: -10px;
    height: 250px;
    width: 570px;
    margin-bottom: 8px;
    z-index: 2;
    @media (min-width: 432px) and (max-width: 632px) {
        max-width: 336;
    }
    @media (max-width: 432px){
        max-width: 336;
    }
 }

 .virtual-background-preview-video{
    margin-left: -10;
    border-radius: 6px;
    height: 100%;
    object-fit: cover;
    width: 100%;
 }
 .video-preview-loader{
     border-radius: 6px;
     background-color: transparent;
     height: 250px;
     margin-bottom: 8px;
     width: 572px;
     position: fixed;
     z-index: 2;
     @media (min-width: 432px) and (max-width: 632px) {
         width: 340px;
     }
 }

 .video-preview-loader svg{
    position: absolute;
    top: 40%;
    left: 45%;
 }