if textbox has value remove border css code example

Example 1: html input box no border

border-width:0px;
border:none;
outline:none;

Example 2: delected blue border when an input is selected

//SCSS format

input{
  &:focus { 
    outline: none !important;
    }
}
textarea{
  &:focus { 
    outline: none !important;
    }
}