File: css/style.css

:root {
  --background: #f0f0f0;
  --itemHover: #d0d0d0;
}

.lds-ring {
  display: inline-block;
  position: relative;
  width: 2rem;
  height: 2rem;
  margin-left: .5rem;
}
  .lds-ring div {
    box-sizing: border-box;
    display: block;
    position: absolute;
    width: 1.5rem;
    height: 1.5rem;
    margin: 2px;
    border: 2px solid #fff;
    border-radius: 50%;
    animation: lds-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    border-color: #fff transparent transparent transparent;
  }
    .lds-ring div:nth-child(1) {
      animation-delay: -0.45s;
    }
    .lds-ring div:nth-child(2) {
      animation-delay: -0.3s;
    }
    .lds-ring div:nth-child(3) {
      animation-delay: -0.15s;
    }
@keyframes lds-ring {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

#attachmentDropzone {
  width: 100%;
  height: 10rem;
  border: solid 1px grey;
  border-radius: .5rem;
  overflow-y: auto;
}

#attachmentDialog {
  position: fixed;
  width: 50%;
  height: 60vh;
  top: 20%;
  left: 25%;
  z-index: 1001;
  background-color: var(--background);
  box-shadow: 5px 5px 12px #444;
  border-radius: 1rem;
  overflow: auto;
  display: none;
  padding: 0 1rem;
}
  .attach-dialog-show {
    display: block !important;
  }
  #attachmentDialog #closeAttachmentDialog {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: transparent;
    border: none;
    font-size: 150%;
    cursor: pointer;
  }
  #attachmentDialog .row {
    display: flex;
  }
    #attachmentDialog .row .column {
      padding: 1rem;
      width: 50%;
    }
      #attachmentDialog .row .column h3 {
        font-size: 200%;
      }
        #attachmentDialog .row .column:nth-child(1) h3 {
          margin-bottom: .5rem;
        }
      #attachmentDialog .row .column img {
        width: 90%;
        height: auto;
        border-radius: .2rem;
      }
      #attachmentDialog .row .column #fapp_attachmentCoverImage {
        display: none;
      }
      #attachmentDialog .row .column #fapp_attachmentCoverImageLabel i {
        margin-right: .5rem;
        font-size: 120%;
      }
      #attachmentDialog .row .column input {
        width: 90%;
        margin-bottom: 2rem;
      }
      #attachmentDialog .row .column textarea {
        width: 90%;
        margin-bottom: 2rem;
      }
      #attachmentDialog .row .column #fapp_attachmentSend {
        width: 5rem;
        margin-top: 3rem;
        display: flex;
        align-items: center;
        justify-content: center;
      }

#attachmentsContainer {
  width: 100%;
  height: 15rem;
  background-color: var(--background);
  overflow-y: auto;
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
}
  #attachmentsContainer .att-item {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 1rem;
  }
    #attachmentsContainer .att-item:hover {
      background-color: var(--itemHover);
    }
    #attachmentsContainer .att-item .action-btns {
      display: none;
    }
      #attachmentsContainer .att-item:hover .action-btns {
        display: flex;
      }
      #attachmentsContainer .att-item a {
        margin-right: .5rem;
      }
      #attachmentsContainer .att-item i {
        font-size: 120%;
        cursor: pointer;
        margin-right: .5rem;
      }
      #attachmentsContainer .att-item span {
        margin-left: .5rem;
        margin-right: 1rem;
        width: 7.5rem;
        overflow: hidden;
      }