.sms__heading.text-center,
.sms-heading.text-center,
.sms.text-center .sms__heading,
.sms.text-center .sms-heading {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.sms__heading.text-right,
.sms-heading.text-right,
.sms.text-right .sms__heading,
.sms.text-right .sms-heading {
    margin-left: auto;
    margin-right: 0;
    text-align: right;
}

.sms__heading:not(.text-center):not(.text-right),
.sms-heading:not(.text-center):not(.text-right),
.sms:not(.text-center):not(.text-right) .sms__heading,
.sms:not(.text-center):not(.text-right) .sms-heading {
    margin-left: 0;
    margin-right: auto;
    text-align: left;
}