.edit-node {
    display: block;
    cursor: pointer;
    position: absolute;
    top: 0;
    right: 0;
    transition: opacity .5s ease-in-out;
    -moz-transition: opacity .5s ease-in-out;
    -webkit-transition: opacity .5s ease-in-out;
    opacity: 0;
    font-size: 16pt;
}

    .edit-node:hover {
        color: dodgerblue;
    }

.content {
    position: relative;
}

    .content:hover .edit-node {
        /*display:block;*/
        opacity: 1;
    }