/* Wrapper guarantees consistent unit placement relative to the input */
.ep-mm-wrap {
    position: relative;
    display: inline-block;
    width: 100%;
}

.ep-mm-wrap > input[type="number"].form-control {
    padding-right: 2.5rem; /* Space for unit */
}

.ep-mm-wrap > .mm {
    position: absolute;
    /* vertically center regardless of height */
    top: 0;
    bottom: 0;
    right: 1.5rem;
    display: flex;
    align-items: center;
    line-height: 1;
    pointer-events: none;
    color: var(--wp--preset--color--text-color);
}
.ep-mm-wrap input.form-control.checked::placeholder { font-size: 13px; }
.ep-mm-wrap input[type="number"]::-webkit-input-placeholder { font-size: 13px; }
.ep-mm-wrap input[type="number"]::-moz-placeholder { font-size: 13px; }     /* Firefox 19+ */
.ep-mm-wrap input[type="number"]:-ms-input-placeholder { font-size: 13px; } /* IE 10+ */
.ep-mm-wrap input[type="number"]::-ms-input-placeholder { font-size: 13px; }