.block.block_course_modulenavigation ul.activities .completioncheck {
    border-radius: 5px;
    content: '';
    display: inline-block;
    height: 15px;
    width: 14px;
    margin-top: -5px;
    position: absolute;
    top: 45%;
    width: 15px;
}

.block.block_course_modulenavigation ul.activities .completioncheck.completed {
    background-color: transparent;
    border: 0px solid #5cb85c;
    background-image: url(https://www.livelearn.gr/___000/completion/003-checked.png);
    background-size: cover;
}


.block.block_course_modulenavigation ul.activities .completioncheck.incomplete {
    border: 1px solid #ccc;
    height: 15px;
    border-radius: 50%;
    width: 15px;
    background-color: #ccc;
}


#page-course-view-topics span.actions .icon,
#page-course-view-onetopic span.actions .icon 
{
    width: 23px;
    height: 23px;
}