Check out example codes for "input type search remove x". It will help you in understanding the concepts better.

Code Example 1

/* clears the 'X' from Internet Explorer */
input[type=search]::-ms-clear {  display: none; width : 0; height: 0; }
input[type=search]::-ms-reveal {  display: none; width : 0; height: 0; }

/* clears the 'X' from Chrome */
input[type="search"]::-webkit-search-decoration,
input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-results-button,
input[type="search"]::-webkit-search-results-decoration { display: none; }

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