.sec_check {
    margin-top: 20px;
    border: none;
    padding: 0;
    width: 10.5ch;
    background: repeating-linear-gradient(90deg, dimgrey 0, dimgrey 1ch, transparent 0, transparent 1.5ch) 0 100%/ 8.9ch 2px no-repeat;
    font: 5ch droid sans mono, consolas, monospace;
    letter-spacing: 0.5ch;
    border-bottom:none!important;
}

.sec_check:focus {
    outline: none;
    color: salmon;
}
.sec_text {
    margin-bottom: 20px;
    font-weight: bold;
    color: coral;
}