@media only screen and (max-width: 1199px) and (min-width: 992px){
.about-intro.copper-heading.about-nickel-cathodes {
    padding-bottom: 10px;
    background-color: #eee;
    width: 85.2%;
    margin: 0 auto !important;
 }
}

@media only screen and (max-width: 991px){
.about-intro.copper-heading.about-nickel-cathodes {
    padding-bottom: 10px;
    background-color: #eee;
    width: 100%;
    margin: 0 auto !important;
 }
}