styles.css

html {
    width: 8.5in;
    margin: 0in;
    padding: 0in;
/*    outline: 1px solid #000;  */
}

body {
    margin: 0in;
    padding: 0in;

}

.page {
/*    outline: 1px solid #000; */
    display: grid;
    grid-template-columns: repeat(3, 2.625in); /* Fixed column width */
    grid-template-rows: repeat(10, 1in); /* Fixed row height */
    grid-gap: 0 0.125in; /* Vertical gap is 0, horizontal gap is 0.125 inches */
    padding-top: 0.5in;
    padding-left: 0.1875in;
    page-break-after: always;
}

.label {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 2.625in; /* width of each label */
    height: 1in; /* height of each label */
    outline: 1px solid #000; 
    box-sizing: content-box;
    overflow: hidden;
    text-align: center;
    font-family: Arial, sans-serif;
    font-size: 10pt;
}

@media print {
    .hidden-print {
        display: none !important;
    }

    .label {
        outline: none;
    }
}