ul.thumbnails.image_picker_selector {
    overflow: auto;
    list-style-image: none;
    list-style-position: outside;
    list-style-type: none;
    padding: 0px;
    margin: 0px; 
}
ul.thumbnails.image_picker_selector ul {
    overflow: auto;
    list-style-image: none;
    list-style-position: outside;
    list-style-type: none;
    padding: 0px;
    margin: 0px; 
}
ul.thumbnails.image_picker_selector li.group_title {
    float: none; 
}
ul.thumbnails.image_picker_selector li {
    float: left;
    
}
ul.thumbnails.image_picker_selector li .thumbnail {
    padding: 6px;
    border: 1px solid #39b54a;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    margin-bottom:5px;
}
ul.thumbnails.image_picker_selector li .thumbnail img {
    -webkit-user-drag: none;
    margin:auto;
    cursor: pointer;
    min-width:100%;
    min-height:40px;
}
ul.thumbnails.image_picker_selector li .thumbnail img:hover {
    opacity: 0.6;
    filter: alpha(opacity=60); /* For IE8 and earlier */
}
ul.thumbnails.image_picker_selector li .thumbnail.selected {
    background: #39b54a;
}
ul.thumbnails.image_picker_selector li .thumbnail.selected:before {
    display: inline-block;
    font: normal normal normal 14px/1 FontAwesome;
    font-size: inherit;
    text-rendering: auto;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transform: translate(0, 0);
    content: "\f05d";
    color: #fff;
    background-color: #39b54a;
    border-radius: 50%;
    font-size: 5em;
    float: right;
    position: absolute;
    right: 50%;
    top: 50%;
    margin-right: -0.6em;
    margin-top: -0.5em;
    padding: 3px 7px;
} 

#collapse_massdelete ul.thumbnails.image_picker_selector li .thumbnail {
    border: 1px solid #fd4040;
}

#collapse_massdelete ul.thumbnails.image_picker_selector li .thumbnail.selected {
    background: #fd4040;
}

#collapse_massdelete ul.thumbnails.image_picker_selector li .thumbnail.selected:before{
    background-color: #fd4040;
    border-radius: 10px;
    content: "\f014";
}

#collapse_massdelete .massdelete-submit-btn{
    background-color: #d43f3a;
    border: 2px solid #d43f3a;
    -webkit-border-radius: 0px;
    -moz-border-radius: 0px;
    border-radius: 0px;
    color: #fff;
    font-size: 14px;
    font-weight: bold;
    padding: 8px 12px;
    outline: 0px !important;
    -webkit-transition: all 0.2s linear;
    -moz-transition: all 0.2s linear;
    -o-transition: all 0.2s linear;
    transition: all 0.2s linear;
}

#collapse_massdelete .massdelete-submit-btn:hover{
    background-color: #ad0600;
    border-color: #840400;
    color: #fff;
}
.image_picker_selector p{ 
    overflow-wrap: break-word;
}