角度-如何更改dropzone css

我使用angular7和dropzone

我有一个问题，当鼠标在上面的图像图标将被隐藏

当鼠标不在图像上方时，将显示图标

但我有一个问题，当鼠标在上面的图像图标将被隐藏

这是html代码：

 <div class="dropZoneDir">
      <dropzone  [placeholder]="" [message]="message" (error)="onUploadError($event)"
              (success)="onUploadSuccess($event)" (removedFile)="onRemoveFile($event)">
              </dropzone>
  </div>

dropzone {
  display: block;
  width: 100%;
  height: auto;
}

dropzone[fxflex] {
  display: flex;
  flex-direction: inherit;
  min-width: 0;
  min-height: 0;

  -webkit-box-direction: inherit;
  -webkit-box-orient: inherit;
}

dropzone[fxflex] >
.dropzone.dz-wrapper {
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;

  -webkit-box-flex: 1;
}

dropzone[fxlayout] {
  align-items: inherit;
  align-content: inherit;
  justify-content: inherit;

  -webkit-box-align: inherit;
  -webkit-box-pack: inherit;
}

dropzone[fxlayout] >
.dropzone.dz-wrapper.dz-single {
  display: flex;
  flex-direction: column;
  align-items: center;
  align-content: center;
  justify-content: center;

  -webkit-box-align: center;
  -webkit-box-direction: column;
  -webkit-box-orient: column;
  -webkit-box-pack: center;
}

dropzone[fxlayout] > .dropzone.dz-wrapper.dz-multiple {
  display: flex;
  flex-flow: row wrap;
  align-items: start;
  align-content: start;
  justify-content: space-between;

  -webkit-box-align: start;
  -webkit-box-direction: row;
  -webkit-box-orient: row;
  -webkit-box-pack: start;
}

dropzone > .dropzone.dz-wrapper {
  position: relative;
  overflow: auto;
  width: 100%;
  min-height: 0;
  max-height: 300px !important;
  padding: 0;
  border: none;
  color: #666;
  background: transparent;
}


dropzone > .dropzone.dz-wrapper .dz-message {
  position: relative;

  display: inline-block;
  overflow: auto;
  width: calc(100% - 16px);
  min-width: calc(100% - 16px);
  min-height: 40px;
  max-width: calc(100% - 16px);
  max-height: 100%;
  margin: 8px;
  border: 2px dashed #aaa;

  background-color: #eee;
}


dropzone > .dropzone.dz-wrapper .dz-message .dz-text {
  position: absolute;
  top: 50%;

  width: 100%;
  padding: 8px 16px;

  text-align: center;

  transform: translateY(-50%);
}


dropzone > .dropzone.dz-wrapper .dz-message .dz-image {
  width: 100%;
  height: 100%;

  background-size: contain;
  background-repeat: no-repeat;
  background-position: 50% 50%;
}


dropzone > .dropzone.dz-wrapper .dz-message.disabled {
  cursor: not-allowed;
}


dropzone >
.dropzone.dz-wrapper .dz-message.disabled .dz-text {
  opacity: 0.5;
}


dropzone >
.dropzone.dz-wrapper .dz-message.dz-placeholder {
  border-color: rgba(#aaa, 0);
}


dropzone >
.dropzone.dz-wrapper .dz-message.dz-placeholder .dz-text {
  position: absolute;
  z-index: 1;
  top: 0;
  right: 10%;
  left: 10%;

  opacity: 0;

  font-weight: bold;
  background-color: rgba(#fff, 0.5);

  transform: translateY(-50%);
  transition:
    filter 250ms ease-in-out,
    opacity 250ms ease-in-out,
    border-color 250ms ease-in-out;
}


dropzone >
.dropzone.dz-wrapper .dz-message.dz-placeholder:hover:not(.disabled) {
  border-color: #aaa;
}


dropzone >
.dropzone.dz-wrapper .dz-message.dz-placeholder:hover:not(.disabled) .dz-text {
  opacity: 1;
}


dropzone >
.dropzone.dz-wrapper .dz-message.dz-placeholder:hover:not(.disabled) .dz-image {
  -webkit-filter: blur(8px);

  filter: blur(8px);
}


dropzone >
.dropzone.dz-wrapper .dz-preview {
  margin: 8px;
}

dropzone >
.dropzone.dz-wrapper .dz-preview .dz-progress {
  width: 80%;
  margin-left: -40%;
  border: 1px solid #aaa;
  border-radius: 4px;
}


dropzone >
.dropzone.dz-wrapper .dz-preview .dz-progress .dz-upload {
  background-color: #666;
}


dropzone >
.dropzone.dz-wrapper .dz-preview .dz-filename span {
  display: block;
  overflow: hidden;
  width: 100%;
  max-width: 100%;

  text-overflow: ellipsis;
}


dropzone >
.dropzone.dz-wrapper .dz-preview .dz-filename span:hover {
  overflow: visible;

  white-space: normal;
  word-wrap: break-word;
}


dropzone >
.dropzone.dz-wrapper.dz-single .dz-message {
  width: 100%;
  height: 100%;
}


dropzone >
.dropzone.dz-wrapper.dz-single.dz-started .dz-message {
  display: none;
}


dropzone >
.dropzone.dz-wrapper.dz-single .dz-preview {
  width: calc(100% - 16px);
  height: 100%;
}


dropzone >
.dropzone.dz-wrapper.dz-single .dz-preview .dz-image {
  width: 100%;
  height: 100%;
  border-radius: 0;
}


dropzone >
.dropzone.dz-wrapper.dz-single .dz-preview .dz-image img {
  display: block;
  width: 100%;
  height: auto;
  margin: 0;
}


dropzone >
.dropzone.dz-wrapper.dz-single .dz-error-message {
  top: 50%;
  left: 50%;

  transform: translateX(-50%) translateY(100%);
}


dropzone >
.dropzone.dz-wrapper.dz-multiple.dz-started .dz-message {
  display: inline-block;
}
dropzone > .dropzone .dz-preview .dz-image {
    border-radius: 20px !important;
    overflow: hidden !important;
    width: 70px !important;
    height: 70px !important;
    position: relative !important;
    display: block !important;
    z-index: 10 !important;
}

dropzone >
.dropzone .dz-preview .dz-remove {
    font-size: 14px;
    text-align: center;
    display: block;
    cursor: pointer;
    border: none;
    margin-top: -80px;
    margin-right: -75px;
}

dropzone >
.dropzone .dz-preview .dz-details {
  z-index: 20 !important;
  position: absolute !important;
  top: 5px !important;
  right: 0px !important;
  font-size: 13px !important;
  min-width: 100% !important;
   max-width: 100% !important;
   padding: 4em 1em !important;
  text-align: center !important;
  color: rgba(0, 0, 0, 0.9) !important;
  line-height: 150% !important;
}




dropzone {  display: block;  width: 100%;  height: auto;}
dropzone[fxflex] {
  display: flex;
  flex-direction: inherit;
  min-width: 0;  min-height: 0;
  -webkit-box-direction: inherit;
  -webkit-box-orient: inherit;
}
  dropzone[fxflex] >
.dropzone.dz-wrapper {
    flex: 1 1 auto;
    min-width: 0;
    min-height: 0;
    -webkit-box-flex: 1;
  }dropzone[fxlayout] {  align-items: inherit;
    align-content: inherit;  justify-content: inherit;
    -webkit-box-align: inherit;  -webkit-box-pack: inherit;
  }
  dropzone[fxlayout] >
.dropzone.dz-wrapper.dz-single {
    display: flex;  flex-direction: column;  align-items: center;  align-content: center;
    justify-content: center;  -webkit-box-align: center;  -webkit-box-direction: column;
    -webkit-box-orient: column;  -webkit-box-pack: center;
  }
  dropzone[fxlayout] >
.dropzone.dz-wrapper.dz-multiple {
    display: flex;  flex-flow: row wrap;  align-items: start;
    align-content: start;  justify-content: space-between;  -webkit-box-align: start;
      -webkit-box-direction: row;  -webkit-box-orient: row;  -webkit-box-pack: start;
  }

dropzone >
.dropzone.dz-wrapper {
    position: relative;  overflow: auto;
    width: 100%;  min-height: 0;  max-height: 300px;padding: 0;
     border: none;  color: #666;  background: transparent;
    }

/*dropzone >
.dropzone.dz-wrapper .dz-message {
      position: relative;  display: inline-block;
      overflow: auto;  width: calc(100% - 16px);  min-width: calc(100% - 16px);
       min-height: 40px;  max-width: calc(100% - 16px);
       max-height: 100%;  margin: 8px;  border: 2px dashed #aaa;
       background-color: #eee;
      }*/

dropzone >
.dropzone.dz-wrapper .dz-message .dz-text {
        position: absolute;  top: 50%;  width: 100%;  padding: 8px 16px;
        text-align: center;  transform: translateY(-50%);
      }

dropzone >
.dropzone.dz-wrapper .dz-message .dz-image {
        width: 100%;  height: 100%;  background-size: contain;
        background-repeat: no-repeat;  background-position: 50% 50%;
      }

dropzone >
.dropzone.dz-wrapper .dz-message.disabled {
        cursor: not-allowed;
      }

dropzone >
.dropzone.dz-wrapper .dz-message.disabled .dz-text {  opacity: 0.5;}

dropzone >
.dropzone.dz-wrapper .dz-message.dz-placeholder {  border-color: rgba(#aaa, 0);}

dropzone >
.dropzone.dz-wrapper .dz-message.dz-placeholder .dz-text {
        position: absolute;  z-index: 1;  top: 0;  right: 10%;  left: 10%;  opacity: 0;
        font-weight: bold;  background-color: rgba(#fff, 0.5);  transform: translateY(-50%);
        transition:    filter 250ms ease-in-out,    opacity 250ms ease-in-out,
        border-color 250ms ease-in-out;
      }

dropzone >
.dropzone.dz-wrapper .dz-message.dz-placeholder:hover:not(.disabled) {  border-color: #aaa;}

dropzone >
.dropzone.dz-wrapper .dz-message.dz-placeholder:hover:not(.disabled) .dz-text {  opacity: 1;}

dropzone >
.dropzone.dz-wrapper .dz-message.dz-placeholder:hover:not(.disabled) .dz-image {  -webkit-filter: blur(8px);  filter: blur(8px);}

dropzone >
.dropzone.dz-wrapper .dz-preview {  margin: 8px;}
dropzone >
.dropzone.dz-wrapper .dz-preview .dz-details {  padding: 24px;}

dropzone >
.dropzone.dz-wrapper .dz-preview .dz-progress {  width: 80%;  margin-left: -40%;  border: 1px solid #aaa;  border-radius: 4px;}
dropzone >
.dropzone.dz-wrapper .dz-preview .dz-progress .dz-upload {  background-color: #666;}
dropzone >
.dropzone.dz-wrapper .dz-preview .dz-filename span {margin-right:-15px;  display: block;  overflow: hidden;  width: 100%;  text-overflow: ellipsis;}
dropzone >
.dropzone.dz-wrapper .dz-preview .dz-filename span:hover {  overflow: visible;  white-space: normal;  word-wrap: break-word;}
dropzone >
.dropzone.dz-wrapper.dz-single .dz-message {  width: 100%;  height: 100%;}
dropzone >
.dropzone.dz-wrapper.dz-single.dz-started .dz-message {  display: none;}
dropzone >
.dropzone.dz-wrapper.dz-single .dz-preview {  width: calc(100% - 16px);  height: 100%;}
dropzone >
.dropzone.dz-wrapper.dz-single .dz-preview .dz-image {  width: 100%;  height: 100%;  border-radius: 0;}
dropzone >
.dropzone.dz-wrapper.dz-single .dz-preview .dz-image img {  display: block;  width: 100%;  height: auto;  margin: 0;}
dropzone >
.dropzone.dz-wrapper.dz-single .dz-error-message {  top: 50%;  left: 50%;  transform: translateX(-50%) translateY(100%);}
dropzone >
.dropzone.dz-wrapper.dz-multiple.dz-started .dz-message {  display: inline-block;}
@-webkit-keyframes passing-through{
    0%{opacity:0;-webkit-transform:translateY(40px);-moz-transform:translateY(40px);-ms-transform:translateY(40px);-o-transform:translateY(40px);transform:translateY(40px)}30%, 70%{opacity:1;-webkit-transform:translateY(0px);-moz-transform:translateY(0px);-ms-transform:translateY(0px);-o-transform:translateY(0px);transform:translateY(0px)}100%{opacity:0;-webkit-transform:translateY(-40px);-moz-transform:translateY(-40px);-ms-transform:translateY(-40px);-o-transform:translateY(-40px);transform:translateY(-40px)}
    }
    @-moz-keyframes passing-through{0%{opacity:0;-webkit-transform:translateY(40px);-moz-transform:translateY(40px);-ms-transform:translateY(40px);-o-transform:translateY(40px);transform:translateY(40px)}30%, 70%{opacity:1;-webkit-transform:translateY(0px);-moz-transform:translateY(0px);-ms-transform:translateY(0px);-o-transform:translateY(0px);transform:translateY(0px)}100%{opacity:0;-webkit-transform:translateY(-40px);-moz-transform:translateY(-40px);-ms-transform:translateY(-40px);-o-transform:translateY(-40px);transform:translateY(-40px)}}
    @keyframes passing-through{0%{opacity:0;-webkit-transform:translateY(40px);-moz-transform:translateY(40px);-ms-transform:translateY(40px);-o-transform:translateY(40px);transform:translateY(40px)}30%, 70%{opacity:1;-webkit-transform:translateY(0px);-moz-transform:translateY(0px);-ms-transform:translateY(0px);-o-transform:translateY(0px);transform:translateY(0px)}100%{opacity:0;-webkit-transform:translateY(-40px);-moz-transform:translateY(-40px);-ms-transform:translateY(-40px);-o-transform:translateY(-40px);transform:translateY(-40px)}}
    @-webkit-keyframes slide-in{0%{opacity:0;-webkit-transform:translateY(40px);-moz-transform:translateY(40px);-ms-transform:translateY(40px);-o-transform:translateY(40px);transform:translateY(40px)}30%{opacity:1;-webkit-transform:translateY(0px);-moz-transform:translateY(0px);-ms-transform:translateY(0px);-o-transform:translateY(0px);transform:translateY(0px)}}
    @-moz-keyframes slide-in{0%{opacity:0;-webkit-transform:translateY(40px);-moz-transform:translateY(40px);-ms-transform:translateY(40px);-o-transform:translateY(40px);transform:translateY(40px)}30%{opacity:1;-webkit-transform:translateY(0px);-moz-transform:translateY(0px);-ms-transform:translateY(0px);-o-transform:translateY(0px);transform:translateY(0px)}}
    @keyframes slide-in{0%{opacity:0;-webkit-transform:translateY(40px);-moz-transform:translateY(40px);-ms-transform:translateY(40px);-o-transform:translateY(40px);transform:translateY(40px)}30%{opacity:1;-webkit-transform:translateY(0px);-moz-transform:translateY(0px);-ms-transform:translateY(0px);-o-transform:translateY(0px);transform:translateY(0px)}}
    @-webkit-keyframes pulse{0%{-webkit-transform:scale(1);-moz-transform:scale(1);-ms-transform:scale(1);-o-transform:scale(1);transform:scale(1)}10%{-webkit-transform:scale(1.1);-moz-transform:scale(1.1);-ms-transform:scale(1.1);-o-transform:scale(1.1);transform:scale(1.1)}20%{-webkit-transform:scale(1);-moz-transform:scale(1);-ms-transform:scale(1);-o-transform:scale(1);transform:scale(1)}}
    @-moz-keyframes pulse{0%{-webkit-transform:scale(1);-moz-transform:scale(1);-ms-transform:scale(1);-o-transform:scale(1);transform:scale(1)}10%{-webkit-transform:scale(1.1);-moz-transform:scale(1.1);-ms-transform:scale(1.1);-o-transform:scale(1.1);transform:scale(1.1)}20%{-webkit-transform:scale(1);-moz-transform:scale(1);-ms-transform:scale(1);-o-transform:scale(1);transform:scale(1)}}
    @keyframes pulse{0%{-webkit-transform:scale(1);-moz-transform:scale(1);-ms-transform:scale(1);-o-transform:scale(1);transform:scale(1)}10%{-webkit-transform:scale(1.1);-moz-transform:scale(1.1);-ms-transform:scale(1.1);-o-transform:scale(1.1);transform:scale(1.1)}20%{-webkit-transform:scale(1);-moz-transform:scale(1);-ms-transform:scale(1);-o-transform:scale(1);transform:scale(1)}}

.dropzone,
.dropzone *{box-sizing:border-box}

.dropzone{min-height:150px;border:2px solid rgba(0,0,0,0.3);background:white;padding:20px 20px}

.dropzone.dz-clickable{cursor:pointer}
.dropzone.dz-clickable *{cursor:default}
.dropzone.dz-clickable .dz-message,
.dropzone.dz-clickable .dz-message *{cursor:pointer}
.dropzone.dz-started .dz-message{display:none}
.dropzone.dz-drag-hover{border-style:solid}
.dropzone.dz-drag-hover .dz-message{opacity:0.5}
.dropzone .dz-message{text-align:center;margin:2em 0}
.dropzone .dz-preview{position:relative;display:inline-block;vertical-align:top;margin:16px;min-height:100px}
.dropzone .dz-preview:hover{z-index:1000}
.dropzone .dz-preview:hover .dz-details{opacity:1}
.dropzone .dz-preview.dz-file-preview .dz-details{opacity:1}
.dropzone .dz-preview.dz-image-preview{background:white}
.dropzone .dz-preview.dz-image-preview .dz-details{-webkit-transition:opacity 0.2s linear;-moz-transition:opacity 0.2s linear;-ms-transition:opacity 0.2s linear;-o-transition:opacity 0.2s linear;transition:opacity 0.2s linear}
.dropzone .dz-preview .dz-remove{font-size:14px;text-align:center;display:block;cursor:pointer;border:none;margin-top: -80px;margin-right: -75px;}
.dropzone .dz-preview .dz-remove:hover{cursor:pointer;color:red;}
.dropzone .dz-preview:hover .dz-details{opacity:1}

.dropzone .dz-preview .dz-details{z-index:20;position:absolute;top:0;left:0;opacity:0;font-size:13px;min-width:100%;max-width:100%;padding:2em 1em;text-align:center;color:rgba(0,0,0,0.9);line-height:100%}
.dropzone .dz-preview .dz-details .dz-size{margin-bottom:1em;font-size:16px;display:none;}
.dropzone .dz-preview .dz-details .dz-filename{white-space:nowrap}
.dropzone .dz-preview .dz-details .dz-filename:hover span{width:100px;margin-right:-35px;border:1px solid rgba(200,200,200,0.8);background-color:rgba(255,255,255,0.8)}
.dropzone .dz-preview .dz-details .dz-filename:not(:hover){overflow:hidden !important;text-overflow:ellipsis !important;width: 80px !important;}
.dropzone .dz-preview .dz-details .dz-filename:not(:hover) span{border:1px solid transparent !important;}
.dropzone .dz-preview .dz-details .dz-filename span,
.dropzone .dz-preview .dz-details .dz-size span{background-color:rgba(255,255,255,0.4);padding:0 0.4em;border-radius:3px}
.dropzone .dz-preview:hover .dz-image img{-webkit-transform:scale(1.05, 1.05);-moz-transform:scale(1.05, 1.05);-ms-transform:scale(1.05, 1.05);-o-transform:scale(1.05, 1.05);transform:scale(1.05, 1.05);-webkit-filter:blur(8px);filter:blur(8px)}
.dropzone .dz-preview .dz-image{border-radius:20px;overflow:hidden;width:70px;height:70px;position:relative;display:block;z-index:10}
.dropzone .dz-preview .dz-image img{display:block}
.dropzone .dz-preview.dz-success .dz-success-mark{-webkit-animation:passing-through 3s cubic-bezier(0.77, 0, 0.175, 1);-moz-animation:passing-through 3s cubic-bezier(0.77, 0, 0.175, 1);-ms-animation:passing-through 3s cubic-bezier(0.77, 0, 0.175, 1);-o-animation:passing-through 3s cubic-bezier(0.77, 0, 0.175, 1);animation:passing-through 3s cubic-bezier(0.77, 0, 0.175, 1);}
.dropzone .dz-preview.dz-error .dz-error-mark{opacity:1;-webkit-animation:slide-in 3s cubic-bezier(0.77, 0, 0.175, 1);-moz-animation:slide-in 3s cubic-bezier(0.77, 0, 0.175, 1);-ms-animation:slide-in 3s cubic-bezier(0.77, 0, 0.175, 1);-o-animation:slide-in 3s cubic-bezier(0.77, 0, 0.175, 1);animation:slide-in 3s cubic-bezier(0.77, 0, 0.175, 1)}
.dropzone .dz-preview .dz-success-mark,
.dropzone .dz-preview .dz-error-mark{pointer-events:none;opacity:0;z-index:500;position:absolute;display:block;top:50%;left:50%;margin-left:-17px;margin-top:-27px}
.dropzone .dz-preview .dz-success-mark svg,
.dropzone .dz-preview .dz-error-mark svg{display:block;width:35px;height:35px}
.dropzone .dz-preview.dz-processing .dz-progress{opacity:1;-webkit-transition:all 0.2s linear;-moz-transition:all 0.2s linear;-ms-transition:all 0.2s linear;-o-transition:all 0.2s linear;transition:all 0.2s linear}
.dropzone .dz-preview.dz-complete .dz-progress{opacity:0;-webkit-transition:opacity 0.4s ease-in;-moz-transition:opacity 0.4s ease-in;-ms-transition:opacity 0.4s ease-in;-o-transition:opacity 0.4s ease-in;transition:opacity 0.4s ease-in}
.dropzone .dz-preview:not(.dz-processing) .dz-progress{-webkit-animation:pulse 6s ease infinite;-moz-animation:pulse 6s ease infinite;-ms-animation:pulse 6s ease infinite;-o-animation:pulse 6s ease infinite;animation:pulse 6s ease infinite}
.dropzone .dz-preview .dz-progress{opacity:1;z-index:1000;pointer-events:none;position:absolute;height:16px;left:50%;top:50%;margin-top:-8px;width:80px;margin-left:-40px;background:rgba(255,255,255,0.9);-webkit-transform:scale(1);border-radius:8px;overflow:hidden}
.dropzone .dz-preview .dz-progress .dz-upload{background:#333;background:linear-gradient(to bottom, #666, #444);position:absolute;top:0;left:0;bottom:0;width:0;-webkit-transition:width 300ms ease-in-out;-moz-transition:width 300ms ease-in-out;-ms-transition:width 300ms ease-in-out;-o-transition:width 300ms ease-in-out;transition:width 300ms ease-in-out}
.dropzone .dz-preview.dz-error .dz-error-message{display:block}
.dropzone .dz-preview.dz-error:hover .dz-error-message{opacity:1;pointer-events:auto}
.dropzone .dz-preview .dz-error-message{pointer-events:none;z-index:1000;position:absolute;display:none !important;opacity:0;-webkit-transition:opacity 0.3s ease;-moz-transition:opacity 0.3s ease;-ms-transition:opacity 0.3s ease;-o-transition:opacity 0.3s ease;transition:opacity 0.3s ease;border-radius:8px;font-size:13px;top:130px;left:-10px;width:140px;background:#be2626;background:linear-gradient(to bottom, #be2626, #a92222);padding:0.5em 1.2em;color:white}
.dropzone .dz-preview .dz-error-message:after{content:'';position:absolute;top:-6px;left:64px;width:0;height:0;border-left:6px solid transparent;border-right:6px solid transparent;border-bottom:6px solid #be2626}



.dropzone .dz-preview.dz-file-preview .dz-image {
  border-radius: 20px;
  background: #999;
  background: linear-gradient(to bottom, #eeeeee08, #dddddd0d) !important;
}



dropzone > .dropzone.dz-wrapper {
  position: relative;
  display: inline-block;
  overflow: initial !important;
  width: calc(100% - 16px);
  min-width: calc(100% - 16px);
  min-height: 40px;
  max-width: calc(100% - 16px);
  max-height: 100%;
  margin: 8px;
  border: 2px dashed #aaa;
  background-color: #eee;
  padding: 2em 0;
  width: 100%;
}

dropzone > .dropzone.dz-wrapper .dz-message .dz-text {
  position: relative;
  top: 50%;
  width: 100%;
  padding: 0 !important;
  text-align: center;
  transform: translateY(15%);
}


.appDropZone {
  left: 0 !important;
  position: relative !important;
  top: 0 !important;
  z-index: 999;
  margin: auto;
}

dropzone {
  width: 100% !important;
}