p {
    width: 100%;
}

#codetxt {
    position: relative;
    padding: 15px;
    border: 1px solid #DCDFE9;
    box-sizing: border-box;
    border-radius: 6px;
    background: #fff;
    appearance: none;
    height: 125px;
    resize: none;
    width: 100%;
    font-size: 12px;
    line-height: 16px;
}