.stm_icon_separator {
    text-transform: uppercase;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
    -ms-flex-pack: center;
    justify-content: center;
}

.stm_icon_separator:before, .stm_icon_separator:after {
    content: "";
    display: block;
    height: 2px;
    border-top: 1px solid;
    -ms-flex: 5%;
    flex: 5%;
}

.stm_icon_separator:before {
    margin-right: 20px;
}

.stm_icon_separator:after {
    margin-left: 20px;
}