<style> colour of selected input box html code example
Example 1: add border to input css
border: none;
border-bottom: 1px solid blue;
Example 2: html input background color
input[type="text"], textarea {
background-color : #d1d1d1;
}
border: none;
border-bottom: 1px solid blue;
input[type="text"], textarea {
background-color : #d1d1d1;
}