1KA_F2F/resources/sass/admin_new/basic/icons.scss

span.faicon,
a.faicon{
        font-family: $fontawesome;
        color: inherit;
        display: inline-block;
        font-weight: 900;

        &.link-right {
            margin-right: 10px;    
        }

        //VELIKOSTI

        &.large {
            font-size: 32px !important;
        }

        &.medium {
            font-size: 24px !important;
        }

        &.normal {
            font-size: 16px !important;
        }

        &.small {
            font-size: 10px !important;
        }
}

span.faicon.lock_open::before{
    content: "\f3c1";
}
span.faicon.lock_close::before{
    content: "\f023";
}