Avoid the spinner in numeric inputs

Avoid the spinner in numeric inputs

  
Add this piece of CSS, not my own invention :-)

/* Disable spinner in numeric fields */
/* http://stackoverflow.com/questions/3790935/can-i-hide-the-html5-number-inputs-spin-box  */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0; /* <-- Apparently some margin are still there even though it's hidden */
}