Common.css

Could you add this snippet into Mediawiki:Common.css for me, please?

.h1, .h2 {
    margin-bottom: 0.6em;
}
.h3, .h4, .h5 {
    margin-bottom: 0.3em;
}
.h3, .h4, .h5, .h6 {
    border-bottom: medium none;
    font-weight: bold;
}
.h1 {
    font-size: 188%;
}
.h2 {
    font-size: 150%;
}
.h3 {
    font-size: 132%;
}
.h4 {
    font-size: 116%;
}
.h5 {
    font-size: 100%;
}
.h6 {
    font-size: 80%;
}
.h1, .h2, .h3, .h4, .h5, .h6 {
    background: none repeat scroll 0 0 rgba(0, 0, 0, 0);
    border-bottom: 1px solid #AAAAAA;
    color: #000000;
    font-weight: normal;
    margin: 0;
    overflow: hidden;
    padding-bottom: 0.17em;
    padding-top: 0.5em;
}

Thanks~

Could you also delete everything in between the /* Calculator */ tags? Thanks.

Could you replace the above code added with this, please?

.h1, .h2, .h3, .h4, .h5, .h6 {
    background: none repeat scroll 0 0 rgba(0, 0, 0, 0);
    border-bottom: 1px solid #AAAAAA;
    color: #000000;
    font-weight: normal;
    margin: 0;
    overflow: hidden;
    padding-bottom: 0.17em;
    padding-top: 0.5em;
}
.h1, .h2 {
    margin-bottom: 0.6em;
}
.h3, .h4, .h5 {
    margin-bottom: 0.3em;
}
.h3, .h4, .h5, .h6 {
    border-bottom: medium none;
    font-weight: bold;
}
.h1 {
    font-size: 188%;
}
.h2 {
    font-size: 150%;
}
.h3 {
    font-size: 132%;
}
.h4 {
    font-size: 116%;
}
.h5 {
    font-size: 108%;
}
.h6 {
    font-size: 100%;
}

Forgot ordering counts and a few font-size changes were made with the upgrade.

Thanks.