.button-circle {
    display: inline-block;
    float: right;
    top: 30px;
    right: 10px;
    background: rgba(0,0,0,0);
    cursor: pointer;
    border-radius: 100%;
    border: 1px solid rgba(0,0,0,.54);
    padding: 0;
    width: 37px;
    height: 37px;
    text-align: center;
    border-radius: 100%;
}
.button-circle.btn-marked-category {
    background: rgba(0,0,0,.54);
}
.button-circle.btn-marked-category:hover {
    background: rgba(0,0,0,.68);
}
.button-circle svg {
    vertical-align: middle;
}
.button-circle svg.plus {
    color: #fff;
    fill: #fff;
}